CVE-2013-1445

Advisory

The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it, which makes it easier for context-dependent 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.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

The Crypto.Random.atfork function in PyCrypto before 2.6.1 does not properly reseed the pseudo-random number generator (PRNG) before allowing a child process to access it, which makes it easier for context-dependent 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.

Resources

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1445
• https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175
• http://www.debian.org/security/2013/dsa-2781
• http://www.openwall.com/lists/oss-security/2013/10/17/3