PT-2013-3141 · Dla · Pycrypto

Dwayne C. Litzenberger · Published 2013-10-25 · Updated 2022-05-17 · CVE-2013-1445

Positive Technologies (AI Summary)

CVSS v4.0

8.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions PyCrypto versions prior to 2.6.1

Description The issue is related to the Crypto.Random.atfork function, which does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it. This makes it easier for attackers to obtain sensitive information by leveraging a race condition in which a child process is created and accesses the PRNG within the same rate-limit period as another process.

Recommendations For versions prior to 2.6.1, update to version 2.6.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the PRNG in child processes to minimize the risk of exploitation.

Exploit

Fix

Weakness Enumeration

CWE-332

CWE-310

Related Identifiers

CVE-2013-1445

DSA-2781-1

GHSA-X377-F64P-HF5J

MGASA-2013-0319

PYSEC-2013-29

Affected Products

Pycrypto

References · 12

• 🔥 https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175 · Exploit
• 🔥 http://openwall.com/lists/oss-security/2013/10/17/3 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2013-1445 · Security Note
• https://osv.dev/vulnerability/GHSA-x377-f64p-hf5j · Vendor Advisory
• http://debian.org/security/2013/dsa-2781 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2013-0319 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2013-0319.html · Security Note
• https://osv.dev/vulnerability/PYSEC-2013-29 · Vendor Advisory
• https://github.com/pycrypto/pycrypto · Note
• https://github.com/pypa/advisory-database/tree/main/vulns/pycrypto/PYSEC-2013-29.yaml · Note
• http://lists.dlitz.net/pipermail/pycrypto/2013q4/000702.html · Note
• https://bugs.mageia.org/show_bug.cgi?id=11491 · Note