SB2011122302 - Security restrictions bypass in mod_nss
Published: December 23, 2011
Security Bulletin ID
SB2011122302
CSH Severity
Low
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) Improper authentication (CVE-ID: CVE-2011-4973)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote unauthenticated attacker to bypass security restrictions.
The weakness exists in the FakeBasicAuth function due to improper authentication checks. A remote attacker can utilize an existing user certificate while entering password as the authentication password, bypass security restrictions and gain access as a valid user.
Remediation
Install update from vendor's website.