SB2025090220 - Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION update for httpd
Published: September 2, 2025
Security Bulletin ID
SB2025090220
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Cryptographic issues (CVE-ID: CVE-2025-49812)
CWE-ID: CWE-310 - Cryptographic Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to he way certain mod_ssl configurations handle TLS upgrades. A remote attacker can launch an HTTP desynchronisation attack, which allows a man-in-the-middle attacker to hijack an HTTP session via a TLS upgrade.
Note, only configurations using "SSLEngine optional" to enable TLS upgrades are affected.
Remediation
Install update from vendor's website.