Amazon Linux 1 Security Advisory: ALAS-2014-425
Advisory Release Date: 2014-10-14 10:04 Pacific
Advisory Updated Date: 2014-10-14 12:30 Pacific
The Server.verify_request function in SimpleGeo python-oauth2 does not check the nonce, which allows remote attackers to perform replay attacks via a signed URL.
The (1) make_nonce, (2) generate_nonce, and (3) generate_verifier functions in SimpleGeo python-oauth2 uses weak random numbers to generate nonces, which makes it easier for remote attackers to guess the nonce via a brute force attack.
Affected Packages:
python-oauth2
Issue Correction:
Run yum update python-oauth2 to update your system.
noarch:
python-oauth2-1.5.211-7.1.amzn1.noarch
src:
python-oauth2-1.5.211-7.1.amzn1.src