CVE-2012-1150

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2012-10-05 · updated 2026-06-16
Weakness: CWE-310

Description

Python before 2.6.8, 2.7.x before 2.7.3, 3.x before 3.1.5, and 3.2.x before 3.2.3 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

Affected products

Python: through 2.6.7; 0.9.0, 0.9.1, 1.2, 1.3, 1.5.2, 1.6 (+51)

References

http://bugs.python.org/issue13703
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
http://mail.python.org/pipermail/python-dev/2011-December/115116.html
http://mail.python.org/pipermail/python-dev/2012-January/115892.html
http://python.org/download/releases/2.6.8/
http://python.org/download/releases/2.7.3/
http://python.org/download/releases/3.1.5/
http://python.org/download/releases/3.2.3/
http://secunia.com/advisories/50858
http://secunia.com/advisories/51087
http://secunia.com/advisories/51089

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