SB2012081512 - Input validation error in Python
Published: August 15, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012081512
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2012-2135)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.
The utf-16 decoder in Python 3.1 through 3.3 does not update the aligned_end variable after calling the unicode_decode_call_errorhandler function, which allows remote attackers to obtain sensitive information (process memory) or cause a denial of service (memory corruption and crash) via unspecified vectors.
Remediation
Install update from vendor's website.
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=670389
- http://bugs.python.org/issue14579
- http://secunia.com/advisories/51087
- http://secunia.com/advisories/51089
- http://www.openwall.com/lists/oss-security/2012/04/25/2
- http://www.openwall.com/lists/oss-security/2012/04/25/4
- http://www.ubuntu.com/usn/USN-1615-1
- http://www.ubuntu.com/usn/USN-1616-1