Description
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.
Metrics
CVSS 2.0 4.3/10
AV:N/AC:M/Au:N/C:P/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.debian.org/security/2013/dsa-2781
- http://www.openwall.com/lists/oss-security/2013/10/17/3Exploit, Patch
- https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175Exploit
- http://www.debian.org/security/2013/dsa-2781
- http://www.openwall.com/lists/oss-security/2013/10/17/3Exploit, Patch
- https://github.com/dlitz/pycrypto/commit/19dcf7b15d61b7dc1a125a367151de40df6ef175Exploit
Timeline
- Published
- Oct 26, 2013
- Last modified
- Jun 16, 2026
- NVD status
- Modified