CVE-2021-24094
published 2021-02-25CVE-2021-24094: Windows TCP/IP Remote Code Execution Vulnerability
PriorityP272critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
22.14%
97.4th percentile
Windows TCP/IP Remote Code Execution Vulnerability
Affected
46 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10 | — | — |
| microsoft | windows_10_version_1507 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1607 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1803 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1809 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_1909 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_2004 | >= 10.0.0 < publication | publication |
| microsoft | windows_10_version_20h2 | >= 10.0.0 < publication | publication |
| microsoft | windows_7 | >= 6.1.0 < publication | publication |
| microsoft | windows_7_service_pack_1 | >= 6.1.0 < publication | publication |
| microsoft | windows_8.1 | >= 6.3.0 < publication | publication |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.0.0 < publication | publication |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.0 < publication | publication |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.0 < publication | publication |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.0 < publication | publication |
| microsoft | windows_server_2012_r2 | >= 6.3.0 < publication | publication |
| microsoft | windows_server_2016 | — | — |
| microsoft | windows_server_2016 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
snort↗
57103, 57104, 57106 - 57108, 57123 and 57128
- →Detect crafted IPv6 packets with multiple headers, invalid headers, or multiple fragment headers targeting Windows TCP/IP stack (CVE-2021-24094 DoS vector). ↗
- →Monitor for IPv6 packet drops matching flow_parse_ip6_truncated, flow_parse_ip6_invalid_routing_ext_hdr, and flow_parse_ip6_frag_nested counters as indicators of active exploitation attempts. ↗
- →Monitor for IPv4 packets carrying Security Options (Type 130) in the first fragment followed by LSRR (Type 131) or SSRR (Type 137) options in a second fragment — the specific fragmentation pattern exploited in the related RCE CVE-2021-24074. ↗
- →Monitor for IPv4 Zone Protection counter hits on flow_dos_pf_badoption, flow_dos_pf_strictsource as indicators of source-routing-based attack packets being sent to Windows hosts. ↗
- →Block or alert on IPv6 fragmented packets at edge devices (firewall/load balancer); host-based firewalls are explicitly noted as insufficient protection for CVE-2021-24094. ↗
- ·The Snort rule IDs (57103, 57104, 57106-57108, 57123, 57128) cover multiple February 2021 Patch Tuesday CVEs collectively, not exclusively CVE-2021-24094; confirm which rule IDs map specifically to CVE-2021-24094 before deploying. ↗
- ·The workaround command 'netsh int ipv6 set global reassemblylimit=0' drops all out-of-order IPv6 fragments and may cause packet loss in legitimate traffic; test before deploying in production. ↗
- ·Windows systems configured with only IPv6 link-local addresses are not remotely exploitable for CVE-2021-24094, as link-local addresses are not routable on the internet. ↗
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
vendor_msrc9.8CRITICAL
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-frhg-hjvm-jhc2: Windows TCP/IP Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24094
ghsa_unreviewed·2022-05-24·CVSS 9.8
CVE-2021-24074 [CRITICAL] GHSA-frhg-hjvm-jhc2: Windows TCP/IP Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24094
Windows TCP/IP Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24094.
GHSA
GHSA-pgmp-7x52-hv66: Windows TCP/IP Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24074
ghsa_unreviewed·2022-05-24·CVSS 9.8
CVE-2021-24094 [CRITICAL] GHSA-pgmp-7x52-hv66: Windows TCP/IP Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24074
Windows TCP/IP Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24074.
Microsoft
Windows TCP/IP Remote Code Execution Vulnerability
vendor_msrc·2021-02-09·CVSS 9.8
CVE-2021-24074 [CRITICAL] Windows TCP/IP Remote Code Execution Vulnerability
Windows TCP/IP Remote Code Execution Vulnerability
FAQ: Where can I find more information about this vulnerability?
Please see MSRC Blog regarding the TCP/IP vulnerabilities discussed in CVE-2021-24074, CVE-2021-24086, and CVE-2021-24094.
Windows TCP/IP: Windows TCP/IP
Microsoft: Microsoft
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;Older Software Release:Exploitation More Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601354
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601345
Reference: https://support.microsoft.com/help/4601345
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601331
Reference: https://
Microsoft
Windows TCP/IP Remote Code Execution Vulnerability
vendor_msrc·2021-02-09·CVSS 9.8
CVE-2021-24094 [CRITICAL] Windows TCP/IP Remote Code Execution Vulnerability
Windows TCP/IP Remote Code Execution Vulnerability
FAQ: Where can I find more information about this vulnerability?
Please see MSRC Blog regarding the TCP/IP vulnerabilities discussed in CVE-2021-24074, CVE-2021-24086, and CVE-2021-24094.
Windows TCP/IP: Windows TCP/IP
Microsoft: Microsoft
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;Older Software Release:Exploitation More Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601354
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601345
Reference: https://support.microsoft.com/help/4601345
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601331
Reference: https://
Microsoft
Windows TCP/IP Denial of Service Vulnerability
vendor_msrc·2021-02-09·CVSS 7.5
CVE-2021-24086 [CRITICAL] Windows TCP/IP Denial of Service Vulnerability
Windows TCP/IP Denial of Service Vulnerability
FAQ: Where can I find more information about this vulnerability?
Please see MSRC Blog regarding the TCP/IP vulnerabilities discussed in CVE-2021-24074, CVE-2021-24086, and CVE-2021-24094.
Windows TCP/IP: Windows TCP/IP
Microsoft: Microsoft
Impact: Denial of Service
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;Older Software Release:Exploitation More Likely;DOS:N/A
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601354
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601345
Reference: https://support.microsoft.com/help/4601345
Reference: https://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4601331
Reference: https://catalog.
No detection rules found.
No public exploits indexed.
Tenable
Microsoft’s August 2021 Patch Tuesday Addresses 44 CVEs (CVE-2021-26424, CVE-2021-36948)
blogs_tenable·2021-08-10·CVSS 9.9
[CRITICAL] Microsoft’s August 2021 Patch Tuesday Addresses 44 CVEs (CVE-2021-26424, CVE-2021-36948)
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Securelist
IT threat evolution Q1 2021. Non-mobile statistics
blogs_securelist·2021-05-31
IT threat evolution Q1 2021. Non-mobile statistics
Table of Contents
Quarterly figures
Financial threats
Financial threat statistics
Ransomware programs
Quarterly trends and highlights
Number of new modifications
Number of users attacked by ransomware Trojans
Attack geography
Top 10 most common families of ransomware Trojans
Miners
Number of new modifications
Number of users attacked by miners
Attack geography
Vulnerable applications used by cybercriminals during cyber attacks
Attacks on macOS
Threat geography
IoT attacks
IoT threat statistics
SSH-based attacks
Threats loaded into traps
Attacks via web resources
Countries that are sources of web-based attacks: Top 10
Countries where users faced the greatest risk of online infection
Local threats
Countries where users faced the highest risk of local infection
Autho
Securelist
IT threat evolution Q1 2021. Non-mobile statistics
blogs_securelist·2021-05-31
IT threat evolution Q1 2021. Non-mobile statistics
Table of Contents
- Quarterly figures
- Financial threats
- Ransomware programs
- Miners
- Vulnerable applications used by cybercriminals during cyber attacks
- Attacks on macOS
- IoT attacks
- Attacks via web resources
- Local threats
Authors
- AMR
These statistics are based on detection verdicts of Kaspersky products received from users who consented to provide statistical data.
## Quarterly figures
According to Kaspersky Security Network, in Q1 2021:
- Kaspersky solutions blocked 2,023,556,082 attacks launched from online resources across the globe.
- 613,968,631 unique URLs were recognized as malicious by Web Anti-Virus components.
- Attempts to run malware designed to steal money via online access to bank accounts were stopped on the computers of 118,099 users.
- Ransomware att
Securelist
Kaspersky Security Bulletin 2020-2021. EU statistics
blogs_securelist·2021-05-26
Kaspersky Security Bulletin 2020-2021. EU statistics
Table of Contents
- Main figures
- Financial threats
- Ransomware programs
- Miners
- Vulnerable applications used by cybercriminals
- Attacks on macOS
- IoT attacks
- Attacks via web resources
- Local threats
- Phishing in the EU
Authors
- Kaspersky
All statistics in this report are from the global cloud service Kaspersky Security Network (KSN), which receives information from components in our security solutions. The data was obtained from users who have given their consent to it being sent to KSN. Millions of Kaspersky users around the globe assist us in this endeavor to collect information about malicious activity. The statistics in this report cover the period from May 2020 to April 2021, inclusive.
## Main figures
- 70% of Internet user computers in the EU experienced at least
Securelist
Kaspersky Security Bulletin 2020-2021. EU statistics
blogs_securelist·2021-05-26
Kaspersky Security Bulletin 2020-2021. EU statistics
Table of Contents
Main figures
Financial threats
Number of users attacked by banking malware
Threat geography
Ransomware programs
Number of users attacked by ransomware Trojans
Threat geography
Top 10 most common families of ransomware Trojans
Miners
Number of users attacked by miners in the EU
Threat geography
Vulnerable applications used by cybercriminals
Attacks on macOS
Threat geography
IoT attacks
IoT threat statistics
Malware loaded into honeypots
Attacks via web resources
Countries that are sources of web-based attacks
Countries where users faced the greatest risk of online infection
Top 20 malicious programs most actively used in online attacks
Local threats
Countries where users faced the highest risk of local infection
Top 20 malicious objects detected on
Trendmicro
February Patch Tuesday Fixes 11 Critical Bugs
blogs_trendmicro·2021-02-10·CVSS 9.8
[CRITICAL] February Patch Tuesday Fixes 11 Critical Bugs
Exploits & Vulnerabilities
# February Patch Tuesday Fixes 11 Critical Bugs
Microsoft fixed 56 vulnerabilities - 11 of them rated Critical - in the February Patch Tuesday cycle.
By: Trend Micro
2021/02/10
Read time: ( words)
Save to Folio
February’s Patch Tuesday fixes a total of 56 vulnerabilities, with 11 of these being rated as Critical by Microsoft. This represents a decline both from January’s total of 83 vulnerabilities, as well as that of the same month in 2020, which had 99. Six of these vulnerabilities had been disclosed publicly, with a separate vulnerability being already exploited beforehand. Seven of these vulnerabilities were disclosed via the Zero Day Initiative (ZDI).
Fixed Critical Vulnerabilities: Networking components, Codecs
The nine Critical vulnerabilities are
Talos
Microsoft Patch Tuesday for Feb. 2021 — Snort rules and prominent vulnerabilities
blogs_talos·2021-02-09·CVSS 7.8
[HIGH] Microsoft Patch Tuesday for Feb. 2021 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for Feb. 2021 — Snort rules and prominent vulnerabilities
By Jon Munshaw, with contributions from Bill Largent.
Microsoft released its monthly security update Tuesday, disclosing 56 vulnerabilities across its suite of products. This is the smallest amount of vulnerabilities Microsoft has disclosed in a month since January 2020.
There are only 11 critical vulnerabilities as part of this release, while there are three moderate-severity exploits, and the remainder are considered “important.” Users of all Microsoft and Windows products are urged to update their software as soon as possible to avoid possible exploitation of all these bugs.
The security updates cover several different products and services, including the Microsoft Office suite of products, the Wind
Unit42
Threat Brief: Windows IPv4 and IPv6 Stack Vulnerabilities (CVE-2021-24074, CVE-2021-24086 and CVE-2021-24094)
blogs_unit42·2021-02-09·CVSS 9.8
CVE-2021-24074 [CRITICAL] Threat Brief: Windows IPv4 and IPv6 Stack Vulnerabilities (CVE-2021-24074, CVE-2021-24086 and CVE-2021-24094)
## Executive Summary
For Microsoft’s Patch Tuesday for February 2021, the company released patches for 56 disclosed vulnerabilities, which include:
- CVE-2021-24086 and CVE-2021-24094: Two denial-of-service (DoS) vulnerabilities in the Windows IPv6 stack.
- CVE-2021-24074: Remote code execution (RCE) vulnerability in the Windows IPv4 stack.
CVE-2021-24086 was given the Common Vulnerability Scoring System (CVSS) score of 7.5/6.5 and an "Important" security rating from Microsoft.
CVE-2021-24094 and CVE-2021-24074 were given the CVSS score of 9.8/8.4 and a "Critical" security rating from Microsoft.
## CVE-2021-24086 and CVE-2021-24094 Overview
An attacker could send a number of crafted IPv6 packets (multiple headers, invalid header, multiple fragment headers, etc.), which would cause a
Tenable
Microsoft’s February 2021 Patch Tuesday Addresses 56 CVEs (CVE-2021-24074, CVE-2021-24094, CVE-2021-24086)
blogs_tenable·2021-02-09·CVSS 9.8
[CRITICAL] Microsoft’s February 2021 Patch Tuesday Addresses 56 CVEs (CVE-2021-24074, CVE-2021-24094, CVE-2021-24086)
## Cloud Exposure
Tenable Cloud Security (CNAPP) Request a demo
Tenable Cloud Vulnerability Management Request a demo
Tenable CIEM Request a demo
Secure your cloud
## Vulnerability Exposure
Tenable Vulnerability Management Try for free
Tenable Security Center Request a demo
Tenable Web App Scanning Try for free
Tenable Patch Management Request a demo
Tenable Enclave Security Request a demo
Tenable Attack Surface Management Request a demo
Tenable Nessus Try for free
## AI Exposure
Tenable AI Exposure Request a demo
## OT/IoT Exposure
Tenable OT Security Request a demo
## Identity Exposure
Tenable Identity Exposure Request a demo
## Business needs
Active Directory
AI Security Posture Management (AI-SPM)
AWS security
Azure security
Cloud Security Posture Man
Talos
Microsoft Patch Tuesday for Feb. 2021 — Snort rules and prominent vulnerabilities
blogs_talos·2021-02-09·CVSS 7.8
[HIGH] Microsoft Patch Tuesday for Feb. 2021 — Snort rules and prominent vulnerabilities
By Jon Munshaw, with contributions from Bill Largent.
Microsoft released its monthly security update Tuesday, disclosing 56 vulnerabilities across its suite of products. This is the smallest amount of vulnerabilities Microsoft has disclosed in a month since January 2020.
There are only 11 critical vulnerabilities as part of this release, while there are three moderate-severity exploits, and the remainder are considered “important.” Users of all Microsoft and Windows products are urged to update their software as soon as possible to avoid possible exploitation of all these bugs.
The security updates cover several different products and services, including the Microsoft Office suite of products, the Windows DNS server and the SharePoint file-sharing service.
Talos also released a new set
Unit42
Threat Brief: Windows IPv4 and IPv6 Stack Vulnerabilities (CVE-2021-24074, CVE-2021-24086 and CVE-2021-24094)
blogs_unit42·2021-02-09·CVSS 9.8
CVE-2021-24074 [CRITICAL] Threat Brief: Windows IPv4 and IPv6 Stack Vulnerabilities (CVE-2021-24074, CVE-2021-24086 and CVE-2021-24094)
Threat Research Center
High Profile Threats
Vulnerabilities
## Threat Brief: Windows IPv4 and IPv6 Stack Vulnerabilities (CVE-2021-24074, CVE-2021-24086 and CVE-2021-24094)
Abisheik Ganesan
Published: February 9, 2021
High Profile Threats
Vulnerabilities
CVE-2021-24074
CVE-2021-24086
CVE-2021-24094
Microsoft
Windows
## Executive Summary
For Microsoft’s Patch Tuesday for February 2021, the company released patches for 56 disclosed vulnerabilities, which include:
CVE-2021-24086 and CVE-2021-24094 : Two denial-of-service (DoS) vulnerabilities in the Windows IPv6 stack.
CVE-2021-24074 : Remote code execution (RCE) vulnerability in the Windows IPv4 stack.
CVE-2021-24086 was given the Common Vulnerability Scoring System (CVSS) score of 7.5/6.5 and an "Important" security rat
Qualys
February 2021 Patch Tuesday – 56 Vulnerabilities, 11 Critical, Adobe
blogs_qualys·2021-02-09·CVSS 7.8
CVE-2021-24074 [HIGH] February 2021 Patch Tuesday – 56 Vulnerabilities, 11 Critical, Adobe
This month’s Microsoft Patch Tuesday addresses 56 vulnerabilities, of which 11 are rated as Critical. Adobe released patches today for Reader, Acrobat, Magento, Photoshop, Animate, Illustrator, and Dreamweaver.
## TCP/IP Trio
Microsoft released a set of fixes affecting Windows TCP/IP implementation that include two Critical Remote Code Execution (RCE) vulnerabilities (CVE-2021-24074 and CVE-2021-24094) and an Important Denial of Service (DoS) vulnerability (CVE-2021-24086). While there is no evidence that these vulnerabilities are exploited in wild, these vulnerabilities should be prioritized given their impact.
## Windows Fax Service
Microsoft released patches to fix a remote code execution vulnerability in Windows Fax Service (CVE-2021-24077). This vulnerability has a CVSSv3 base sco
Qualys
February 2021 Patch Tuesday – 56 Vulnerabilities, 11 Critical, Adobe | Qualys
blogs_qualys·2021-02-09·CVSS 7.8
CVE-2021-24074 [HIGH] February 2021 Patch Tuesday – 56 Vulnerabilities, 11 Critical, Adobe | Qualys
This month’s Microsoft Patch Tuesday addresses 56 vulnerabilities, of which 11 are rated as Critical. Adobe released patches today for Reader, Acrobat, Magento, Photoshop, Animate, Illustrator, and Dreamweaver.
### TCP/IP Trio
Microsoft released a set of fixes affecting Windows TCP/IP implementation that include two Critical Remote Code Execution (RCE) vulnerabilities (CVE-2021-24074 and CVE-2021-24094) and an Important Denial of Service (DoS) vulnerability (CVE-2021-24086). While there is no evidence that these vulnerabilities are exploited in wild, these vulnerabilities should be prioritized given their impact.
### Windows Fax Service
Microsoft released patches to fix a remote code execution vulnerability in Windows Fax Service (CVE-2021-24077). This vulnerability has a CVSSv3 base s
Unit42
Network Attack Trends: Attackers Leveraging High Severity and Critical Exploits (May-July 2020)
blogs_unit42·2020-09-15·CVSS 9.8
CVE-2021-24074 [CRITICAL] Network Attack Trends: Attackers Leveraging High Severity and Critical Exploits (May-July 2020)
Threat Research Center
Trend Reports
Vulnerabilities
## Network Attack Trends: Attackers Leveraging High Severity and Critical Exploits (May-July 2020)
Brock Mammen
Yue Guan
Yu Fu
Published: September 15, 2020
Trend Reports
Vulnerabilities
CVE-2021-24074
CVE-2021-24086
CVE-2021-24094
Microsoft
Windows
## Executive Summary
From May 1-July 21, 2020, Unit 42 researchers captured global network traffic from firewalls around the world and then analyzed the data to examine the latest network attack trends. The majority of attacks we observed were classified as high severity (56.7%), and nearly one quarter (23%) were classified as critical. The most common vulnerabilities exploited were CVE-2012-2311 and CVE-2012-1823 , both command injection vulnerabilities in PHP CGI scripts
2021-02-25
Published