CVE-2021-34793

CWE-9244 documents4 sources
Severity
8.6HIGH
EPSS
0.1%
top 76.63%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
12
Cisco Adaptive Security ApplianceCisco Adaptive Security Appliance SoftwareCisco Firepower Threat Defense+9 more
Timeline
PublishedOct 27
Latest updateMay 24

Description

A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software operating in transparent mode could allow an unauthenticated, remote attacker to poison MAC address tables, resulting in a denial of service (DoS) vulnerability. This vulnerability is due to incorrect handling of certain TCP segments when the affected device is operating in transparent mode. An attacker could exploit this vulnerability by sending a crafted TCP seg…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages12 packages

▶NVDcisco/firepower_threat_defense6.5.0 — 6.6.5+2
▶NVDcisco/asa_5505_firmware009.008\(004.025\)

🔴Vulnerability Details

2
GHSA
GHSA-jjpm-mxjp-g6mw: A vulnerability in the TCP Normalizer of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software operating in tra↗2022-05-24
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CVEList
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Transparent Mode Denial of Service Vulnerability↗2021-10-27
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📋Vendor Advisories

1
Cisco
Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Transparent Mode Denial of Service Vulnerability↗2021-10-27
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CVE-2021-34793 (HIGH CVSS 8.6) | A vulnerability in the TCP Normaliz | cvebase.io