CVE-2018-8302
published 2018-08-15CVE-2018-8302: A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microsoft…
PriorityP264critical9.8CVSS 3.0
AVNACLPRNUINSUCHIHAH
EPSS
25.52%
97.7th percentile
A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microsoft Exchange Memory Corruption Vulnerability." This affects Microsoft Exchange Server.
Affected
34 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | exchange_server | — | — |
| microsoft | microsoft_exchange_server | — | — |
| microsoft | microsoft_exchange_server | — | — |
| microsoft | microsoft_exchange_server | — | — |
| microsoft | microsoft_exchange_server | — | — |
| microsoft | microsoft_exchange_server | — | — |
| msrc | microsoft_exchange_server_2010_service_pack_3 | — | — |
| msrc | microsoft_exchange_server_2010_service_pack_3_update_rollup_23 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_20 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_21 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_22 | — | — |
| msrc | microsoft_exchange_server_2013_cumulative_update_23 | — | — |
| msrc | microsoft_exchange_server_2013_service_pack_1 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_10 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_11 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_12 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_13 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_14 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_15 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_16 | — | — |
| msrc | microsoft_exchange_server_2016_cumulative_update_17 | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →CVE-2018-8302 is triggered by a specially crafted email sent to a vulnerable Exchange server — monitor for anomalous inbound email traffic to Exchange that triggers memory corruption, and alert on Exchange worker processes spawning unexpected child processes (indicative of SYSTEM-level code execution). ↗
- →Successful exploitation results in arbitrary code running as the SYSTEM user on the Exchange server — monitor Exchange server processes for unexpected privilege escalation or new account creation activity. ↗
- →Exploitation requires access to mailbox account setup — restrict and audit Exchange mailbox provisioning permissions; alert on non-administrative accounts attempting mailbox configuration changes. ↗
- ·As of the advisory publication, CVE-2018-8302 had not been publicly disclosed or observed exploited in the wild — prioritize patching but active exploitation indicators are not yet available. ↗
CVSS provenance
nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.010.0CRITICALAV:N/AC:L/Au:N/C:C/I:C/A:C
vendor_msrc9.8CRITICAL
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GHSA
GHSA-w7c5-hj78-g4cx: A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microso
ghsa_unreviewed·2022-05-13
CVE-2018-8302 [CRITICAL] CWE-787 GHSA-w7c5-hj78-g4cx: A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microso
A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory, aka "Microsoft Exchange Memory Corruption Vulnerability." This affects Microsoft Exchange Server.
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 7.8
CVE-2021-26857 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 9.1
CVE-2021-26855 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 7.8
CVE-2021-27065 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Server Remote Code Execution Vulnerability
vendor_msrc·2021-03-09·CVSS 7.8
CVE-2021-26858 [CRITICAL] Microsoft Exchange Server Remote Code Execution Vulnerability
Microsoft Exchange Server Remote Code Execution Vulnerability
FAQ: Is this vulnerability being used in an active attack?
Yes. The vulnerability described in this CVE is one of four vulnerabilities that are being exploited in an active attack. The security updates address this attack. More information can be found here: https://msrc-blog.microsoft.com/2021/03/02/multiple-security-updates-released-for-exchange-server.
What is the target for this attack?
The initial attack in this attack chain targets an Exchange On-prem server that is able to receive untrusted connections from an external source. In addition, the Exchange server would need to be running Microsoft Exchange Server 2013, 2016, or 2019.
Where can I get more information about how to protect myself from the vulnerabilities?
Pleas
Microsoft
Microsoft Exchange Memory Corruption Vulnerability
vendor_msrc·2018-08-14·CVSS 9.8
CVE-2018-8302 [CRITICAL] Microsoft Exchange Memory Corruption Vulnerability
Microsoft Exchange Memory Corruption Vulnerability
Description: A remote code execution vulnerability exists in Microsoft Exchange software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the System user. An attacker could then install programs; view, change, or delete data; or create new accounts.
Exploitation of the vulnerability requires that a specially crafted email be sent to a vulnerable Exchange server.
The security update addresses the vulnerability by correcting how Microsoft Exchange handles objects in memory.
Microsoft Exchange Server: Microsoft Exchange Server
Impact: Remote Code Execution
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Relea
No detection rules found.
No public exploits indexed.
Trendmicro
August Patch Tuesday: A Tale of Two Zero-Days
blogs_trendmicro·2018-08-15·CVSS 7.5
[HIGH] August Patch Tuesday: A Tale of Two Zero-Days
Ausnutzung von Schwachstellen
## August Patch Tuesday: A Tale of Two Zero-Days
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
By: Trend Micro Aug 15, 2018 Read time: ( words)
Save to Folio
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
The first of these zero day vulnerabilities is CVE-2018-8373 , a use-after-free (UAF) vulnerability in VBscript engine that Trend Micro researchers found in Internet Explorer. This vulnerability bears many similarities to CVE-2018-8174 , another VBscript engine vulnerability that was patched back in May . Successful exploitation of this vulnerability could
Trendmicro
August Patch Tuesday: A Tale of Two Zero-Days
blogs_trendmicro·2018-08-15·CVSS 7.5
CVE-2018-8373 [HIGH] August Patch Tuesday: A Tale of Two Zero-Days
Exploits y vulnerabilidades
## August Patch Tuesday: A Tale of Two Zero-Days
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
By: Trend Micro Aug 15, 2018 Read time: ( words)
Save to Folio
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
The first of these zero day vulnerabilities is CVE-2018-8373 , a use-after-free (UAF) vulnerability in VBscript engine that Trend Micro researchers found in Internet Explorer. This vulnerability bears many similarities to CVE-2018-8174 , another VBscript engine vulnerability that was patched back in May . Successful exploitation of this vulnerability could a
Trendmicro
August Patch Tuesday: A Tale of Two Zero-Days
blogs_trendmicro·2018-08-15·CVSS 7.5
CVE-2018-8373 [HIGH] August Patch Tuesday: A Tale of Two Zero-Days
Exploits & Vulnerabilities
# August Patch Tuesday: A Tale of Two Zero-Days
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
By: Trend Micro
2018/08/15
Read time: ( words)
Save to Folio
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
The first of these zero day vulnerabilities is CVE-2018-8373, a use-after-free (UAF) vulnerability in VBscript engine that Trend Micro researchers found in Internet Explorer. This vulnerability bears many similarities to CVE-2018-8174, another VBscript engine vulnerability that was patched back in May. Successful exploitation of this vulnerability could allow a
Trendmicro
August Patch Tuesday: A Tale of Two Zero-Days
blogs_trendmicro·2018-08-15·CVSS 7.5
CVE-2018-8373 [HIGH] August Patch Tuesday: A Tale of Two Zero-Days
Exploits & Vulnerabilities
## August Patch Tuesday: A Tale of Two Zero-Days
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
By: Trend Micro Aug 15, 2018 Read time: ( words)
Save to Folio
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
The first of these zero day vulnerabilities is CVE-2018-8373 , a use-after-free (UAF) vulnerability in VBscript engine that Trend Micro researchers found in Internet Explorer. This vulnerability bears many similarities to CVE-2018-8174 , another VBscript engine vulnerability that was patched back in May . Successful exploitation of this vulnerability could al
Trendmicro
August Patch Tuesday: A Tale of Two Zero-Days
blogs_trendmicro·2018-08-15·CVSS 7.5
CVE-2018-8373 [HIGH] August Patch Tuesday: A Tale of Two Zero-Days
Exploits & Vulnerabilities
## August Patch Tuesday: A Tale of Two Zero-Days
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
By: Trend Micro 2018/08/15 Read time: ( words)
Save to Folio
This month’s Microsoft Patch Tuesday includes important updates that patch two zero-day vulnerabilities that are already being actively exploited.
The first of these zero day vulnerabilities is CVE-2018-8373 , a use-after-free (UAF) vulnerability in VBscript engine that Trend Micro researchers found in Internet Explorer. This vulnerability bears many similarities to CVE-2018-8174 , another VBscript engine vulnerability that was patched back in May . Successful exploitation of this vulnerability could allo
Talos
Microsoft Tuesday August 2018
blogs_talos·2018-08-14·CVSS 9.8
[CRITICAL] Microsoft Tuesday August 2018
## Microsoft Tuesday August 2018
Microsoft released its monthly set of security advisories today for vulnerabilities that have been identified and addressed in various products. This month's advisory release addresses 62 new vulnerabilities, 20 of which are rated “critical,” 38 that are rated “important,” one that is rated moderate and one that is rated as low severity. These vulnerabilities impact Windows Operating System, Edge and Internet Explorer, along with several other products.
In addition to the 60 vulnerabilities referenced above, Microsoft has also released a critical update advisory, ADV180020 which addresses the vulnerabilities described in the Adobe Flash Security Bulletin APSB18-25.
## Critical Vulnerabilities
This month, Microsoft is addressing 20 vulnerabilities that a
Qualys
August 2018 Patch Tuesday – 63 Vulns, L1TF (Foreshadow), Exchange, SQL, Active Attacks on IE flaw
blogs_qualys·2018-08-14·CVSS 9.8
CVE-2018-8373 [CRITICAL] August 2018 Patch Tuesday – 63 Vulns, L1TF (Foreshadow), Exchange, SQL, Active Attacks on IE flaw
In this month’s Patch Tuesday release there are 63 vulnerabilities patched with 20 Criticals. Out of the criticals, over half are browser-related, with the rest including Windows, SQL, and Exchange. Active exploits have been detected against CVE-2018-8373, one of the scripting engine vulnerabilities.
## Workstation Patches
Browser and Scripting Engine patches should be prioritized for workstation-type devices, meaning any system that is used for email or to access the internet via a browser. Microsoft has disclosed that CVE-2018-8373 has active exploits against Internet Explorer, making these patches a high priority. The PDF viewer, Windows Font Library, and GDI+ also have patches available that require a user to interact with a malicious site or file.
## LNK Remote Code Execution
A vu
Qualys
Patch Tuesday August 2018: Active IE Attacks | Qualys
blogs_qualys·2018-08-14·CVSS 9.8
CVE-2018-8373 [CRITICAL] Patch Tuesday August 2018: Active IE Attacks | Qualys
In this month’s Patch Tuesday release there are 63 vulnerabilities patched with 20 Criticals. Out of the criticals, over half are browser-related, with the rest including Windows, SQL, and Exchange. Active exploits have been detected against CVE-2018-8373, one of the scripting engine vulnerabilities.
### Workstation Patches
Browser and Scripting Engine patches should be prioritized for workstation-type devices, meaning any system that is used for email or to access the internet via a browser. Microsoft has disclosed that CVE-2018-8373 has active exploits against Internet Explorer, making these patches a high priority. The PDF viewer, Windows Font Library, and GDI+ also have patches available that require a user to interact with a malicious site or file.
### LNK Remote Code Execution
A
Talos
Microsoft Tuesday August 2018
blogs_talos·2018-08-14·CVSS 9.8
[CRITICAL] Microsoft Tuesday August 2018
Microsoft released its monthly set of security advisories today for vulnerabilities that have been identified and addressed in various products. This month's advisory release addresses 62 new vulnerabilities, 20 of which are rated “critical,” 38 that are rated “important,” one that is rated moderate and one that is rated as low severity. These vulnerabilities impact Windows Operating System, Edge and Internet Explorer, along with several other products.
In addition to the 60 vulnerabilities referenced above, Microsoft has also released a critical update advisory, ADV180020 which addresses the vulnerabilities described in the Adobe Flash Security Bulletin APSB18-25.
### Critical Vulnerabilities
This month, Microsoft is addressing 20 vulnerabilities that are rated "critical." Talos believ
http://www.securityfocus.com/bid/104973http://www.securitytracker.com/id/1041468https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8302http://www.securityfocus.com/bid/104973http://www.securitytracker.com/id/1041468https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8302
2018-08-15
Published