Buffer overflow in Dlitz Pycrypto
CVE-2013-7459
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.096 (95.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.096 · newest: 0.096 · change: 0.000
Affected products
- Dlitz Pycrypto
- Fedoraproject Fedora — versions 24, 25
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (VDB Entry, Third Party Advisory, Issue Tracking)
- pony7.fr/ctf:public:32c3:cryptmsg (Technical Description, Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2016/12/27/8 (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- github.com/dlitz/pycrypto/issues/176 (Patch, Vendor Advisory)
- www.securityfocus.com/bid/95122 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/201702-14 (vendor-advisory)
- github.com/dlitz/pycrypto/commit/8dbe0dc3eea5c689d4f76b37b93fe216cf1f00d4 (Patch)
Frequently asked questions
- What is CVE-2013-7459?
- CVE-2013-7459 is a critical-severity vulnerability in Dlitz Pycrypto, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-02-15.
- How severe is CVE-2013-7459?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2013-7459 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.