SB2017021520 - Buffer overflow in Fedoraproject Fedora
Published: February 15, 2017 Updated: August 8, 2020
Security Bulletin ID
SB2017021520
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) Buffer overflow (CVE-ID: CVE-2013-7459)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Heap-based buffer overflow in the ALGnew function in block_templace.c in Python Cryptography Toolkit (aka pycrypto) allows remote attackers to execute arbitrary code as demonstrated by a crafted iv parameter to cryptmsg.py.
Remediation
Install update from vendor's website.
References
- http://www.openwall.com/lists/oss-security/2016/12/27/8
- http://www.securityfocus.com/bid/95122
- https://bugzilla.redhat.com/show_bug.cgi?id=1409754
- https://github.com/dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4
- https://github.com/dlitz/pycrypto/issues/176
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C6BWNADPLKDBBQBUT3P75W7HAJCE7M3B/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RJ37R2YLX56YZABFNAOWV4VTHTGYREAE/
- https://pony7.fr/ctf:public:32c3:cryptmsg
- https://security.gentoo.org/glsa/201702-14