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Fencer Intel
critical 9.8

CVE-2013-7459 json

Buffer Overflow in pycrypto

published 9y ago modified 4mo ago also GHSA-cq27-v7xp-c356 , PYSEC-2017-94 , EUVD-2017-0102

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.6%
EPSS 9.6% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

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.

Patch / fix

  • python-crypto Ubuntu 14.04 LTS 2.6.1-4ubuntu0.1
  • python-crypto Ubuntu 16.04 LTS 2.6.1-6ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2013-7459

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • python-pycrypto SLE Point of Sale 12 SP2, SLE Module for Web and Scripting 12, SLE Module for Public Cloud 12 +10 more 2.6.1-10.3.1
  • python-paramiko OpenStack Cloud 6, Enterprise Storage 3 1.15.2-2.3.1
  • python-paramiko SLE Module for Public Cloud 12 1.15.2-2.6.1
  • python-pycrypto SLES 11 SP4-CLIENT-TOOLS, SLES 11 SP3-CLIENT-TOOLS 2.6.1-5.1

suse advisories SUSE-SU-2017:2350-1SUSE-SU-2017:1744-1

Is CVE-2013-7459 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2013-7459 updated cvss 9.8

pycrypto: Heap-buffer overflow in ALGobject structure

  • Red Hat Ceph Storage 1.3 python-crypto Red Hat Ceph Storage 2 python-crypto Red Hat Enterprise Linux OpenStack Platform 6 (Juno) python-crypto Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) python-crypto, python2-crypto Red Hat OpenShift Enterprise 3 python-crypto, python2-crypto Red Hat OpenStack Platform 8 (Liberty) python-crypto, python2-crypto
    +6 more products
    Red Hat OpenStack Platform 9 (Mitaka) python-crypto, python2-crypto Red Hat OpenStack Platform 10 (Newton) python-crypto, python2-crypto Red Hat OpenStack Platform 11 (Ocata) python-crypto Red Hat Storage 3 python-crypto, python2-crypto Red Hat Storage Console 2 python-crypto Red Hat Virtualization 4 python-crypto
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 6 python-crypto Red Hat Enterprise Linux 7 python-crypto Red Hat Enterprise Virtualization 3 python-crypto Red Hat OpenStack Platform 12 (Pike) python2-crypto Red Hat Quickstart Cloud Installer 1 python-crypto
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

9.58% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • pony7.fr https://pony7.fr/ctf:public:32c3:cryptmsg referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
pypi pycrypto
<=2.6.1
all versions
 no fix listed

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.