SB2018010817 - Improper Certificate Validation in Debian Linux
Published: January 8, 2018 Updated: August 8, 2020
Security Bulletin ID
SB2018010817
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 security vulnerability.
1) Improper Certificate Validation (CVE-ID: CVE-2015-2320)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to client-side SSLv2 fallback.
Remediation
Install update from vendor's website.
References
- http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/
- http://www.openwall.com/lists/oss-security/2015/03/17/9
- http://www.securityfocus.com/bid/73256
- http://www.ubuntu.com/usn/USN-2547-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1202869
- https://github.com/mono/mono/commit/b371da6b2d68b4cdd0f21d6342af6c42794f998b
- https://www.debian.org/security/2015/dsa-3202