Buffer overflow in Apache HTTP Server - CVE-2020-26691

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Main Vulnerability Database Vulnerabilities #VU67487

Buffer overflow in Apache HTTP Server - CVE-2020-26691

Published: September 20, 2022


Vulnerability identifier: #VU67487
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-26691
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a boundary error in Apache httpd mod_session. A remote attacker can pass a specially crafted file, trigger memory corruption and perform a denial of service attack.


Affected software

Apache HTTP Server
ClevOS
IBM Rational Build Forge

How to mitigate CVE-2020-26691

Install updates from vendor's website.

Apache HTTP Server - update to 2.4.48
IBM Rational Build Forge - update to 8.0.0.21

External References

Related Security Bulletins