SB2016092146 - Improper Authorization in Debian Linux
Published: September 21, 2016 Updated: August 9, 2020
Security Bulletin ID
SB2016092146
CSH Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: CVE-2016-7143)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 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/E:U/U:Amber
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The m_authenticate function in modules/m_sasl.c in Charybdis before 3.5.3 allows remote attackers to spoof certificate fingerprints and consequently log in as another user via a crafted AUTHENTICATE parameter.
Remediation
Install update from vendor's website.
References
- http://www.debian.org/security/2016/dsa-3661
- http://www.openwall.com/lists/oss-security/2016/09/04/3
- http://www.openwall.com/lists/oss-security/2016/09/05/8
- http://www.securityfocus.com/bid/92761
- https://github.com/charybdis-ircd/charybdis/blob/charybdis-3.5.3/NEWS.md
- https://github.com/charybdis-ircd/charybdis/commit/818a3fda944b26d4814132cee14cfda4ea4aa824