Bug 1428872

Summary: tor: Integer underflow when comparing malformed tor versions
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: lewk, pwouters, s
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: tor 0.2.9.10, tor 0.3.0.4 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2017-05-17 07:18:50 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1428873, 1428874, 1428875, 1428876    
Bug Blocks:    

Description Andrej Nemec 2017-03-03 14:38:43 UTC 
An integer overflow vulnerability was found in Tor. The application could crash while comparing malformed Tor versions when built with --enable-expensive-hardening.

Upstream bug:

https://trac.torproject.org/projects/tor/ticket/21278

Upstream patches:

https://gitweb.torproject.org/tor.git/commit/?id=a0ef3cf0880e3cd343977b3fcbd0a2e7572f0cb4
https://gitweb.torproject.org/tor.git/commit/?id=194e31057fbf07d6bdf4b62d26e1a9db334e5f1c
Related:
https://gitweb.torproject.org/tor.git/commit/?id=1afc2ed956a35b40dfd1d207652af5b50c295da7
Extra fix:
https://gitweb.torproject.org/tor.git/commit/?id=02e05bd74dbec614397b696cfcda6525562a4675
Comment 1 Andrej Nemec 2017-03-03 14:39:48 UTC 
Created tor tracking bugs for this issue:

Affects: epel-5 [bug 1428873]
Affects: epel-6 [bug 1428874]
Affects: epel-7 [bug 1428875]
Affects: fedora-all [bug 1428876]