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CVE-2013-7459

35
FAUCET Score

CVE-2013-7459 is a critical heap-based buffer overflow vulnerability in the ALGnew function of the Python Cryptography Toolkit (pycrypto), affecting products like dlitz fedora and fedoraproject. This flaw allows remote attackers to execute arbitrary code by supplying a specially crafted initialization vector (iv) parameter, as demonstrated in cryptmsg.py. With a CVSS score of 9.8, it poses a severe risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.1CPE matchmatch criteria
cpe:2.3:a:dlitz:pycrypto:*:*:*:*:*:*:*:*
24CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
25CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
9.50%
Probability of exploitation in next 30 days
EPSS Percentile
94.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0950 is in the 90th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

github_advisorypatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat OpenShift Enterprise 3Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 10 (Newton)Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 11 (Ocata)Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Storage Console 2Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Virtualization 4Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 1.3Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 2Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: python-crypto
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: python-crypto

Vendor Advisories (2)

pipGHSA-cq27-v7xp-c356critical

Buffer Overflow in pycrypto

Dec 14, 2018
redhatCVE-2013-7459Important

pycrypto: Heap-buffer overflow in ALGobject structure

Dec 15, 2015

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party AdvisoryVDB Entry
github.com / dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4
Patch
github.com / dlitz/pycrypto/issues/176
PatchVendor Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/C6BWNADPLKDBBQBUT3P75W7HAJCE7M3B
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/RJ37R2YLX56YZABFNAOWV4VTHTGYREAE
pony7.fr / ctf:public:32c3:cryptmsg
ExploitTechnical DescriptionThird Party Advisory
security.gentoo.org / glsa/201702-14
openwall.com / lists/oss-security/2016/12/27/8
Mailing ListThird Party Advisory
securityfocus.com / bid/95122
Third Party AdvisoryVDB Entry