paramiko RandomPool information disclosure
| paramiko-randompool-info-disclosure (39749) |  Low Risk |
Description:
paramiko could allow a remote attacker to obtain sensitive information, caused by an error related to secure communications and passwords generated using the RandomPool class. If multiple connections request encrypted numbers to be generated simultaneously, the RandomPool class could assign duplicate connection numbers across various threads and processes. A remote attacker could exploit this weakness using brute force techniques to discover passwords or man-in-the-middle techniques to obtain sensitive information transmitted between paramiko connections.
Platforms Affected:
- Gentoo, Linux
- Robey Pointer, paramiko 1.6.4
Remedy:
Upgrade to the latest version of paramiko (1.7.2 or later), available from the paramiko Web page. See References.
Consequences:
Obtain Information
References:
- Debian Bug report logs - #460706, python-paramiko: CVE-2008-0299 insecure use of RandomPool at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=460706.
- paramiko Web page, paramiko at http://www.lag.net/paramiko/.
- BID-27307: paramiko Random Number Generator Weakness
- CVE-2008-0299: common.py in Paramiko 1.7.1 and earlier, when using threads or forked processes, does not properly use RandomPool, which allows one session to obtain sensitive information from another session by predicting the state of the pool.
- GLSA-200803-07: Paramiko: Information disclosure
- SA28510: paramiko "RandomPool" Insecure Random Number Generator
Reported:
Jan 17, 2008
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