Improper Authorization in Debian Linux - CVE-2016-7143
Published: September 21, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU40091
CSH Severity: High
CVSS v4.0: 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
CVE-ID: CVE-2016-7143
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Debian
Affected software:
Debian Linux
Debian Linux
Detailed vulnerability description
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.
How to mitigate CVE-2016-7143
Install update from vendor's website.
Sources
- 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