CVE-2013-7459

critical

Description

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.

References

Advisories
More

https://bugzilla.redhat.com/show_bug.cgi?id=1409754

http://www.securityfocus.com/bid/95122

http://www.openwall.com/lists/oss-security/2016/12/27/8

https://securitylab.github.com/research/python-security-ql/

https://github.com/advisories/GHSA-cq27-v7xp-c356

https://security.gentoo.org/glsa/201702-14

https://pony7.fr/ctf:public:32c3:cryptmsg

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RJ37R2YLX56YZABFNAOWV4VTHTGYREAE/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C6BWNADPLKDBBQBUT3P75W7HAJCE7M3B/

https://github.com/dlitz/pycrypto/issues/176

https://github.com/dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4

https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-0102

Details

Source: Mitre, NVD

Published: 2017-02-15

Updated: 2026-05-13

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N