SB2013102602 - Cryptographic issues in GNU PyCrypto
Published: October 26, 2013 Updated: August 10, 2020
Security Bulletin ID
SB2013102602
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Cryptographic issues (CVE-ID: CVE-2013-1445)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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.
Remediation
Install update from vendor's website.