Bug 485021 (CVE-2009-0936, CVE-2009-0937, CVE-2009-0938, CVE-2009-0939) - tor: multiple security fixes in 0.2.0.34 (CVE-2009-0936, CVE-2009-0937, CVE-2009-0938, CVE-2009-0939)
Summary: tor: multiple security fixes in 0.2.0.34 (CVE-2009-0936, CVE-2009-0937, CVE-2...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: CVE-2009-0936, CVE-2009-0937, CVE-2009-0938, CVE-2009-0939
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
: 485439 485441 485442 (view as bug list)
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-02-11 07:19 UTC by Tomas Hoger
Modified: 2009-12-04 21:00 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2009-12-04 21:00:41 UTC
Embargoed:

Attachments (Terms of Use)

Description Tomas Hoger 2009-02-11 07:19:27 UTC 
Quoting tor 0.2.0.34 release announcement:

Security fixes:

    * Fix an infinite-loop bug on handling corrupt votes under certain
      circumstances. Bugfix on 0.2.0.8-alpha.
    * Fix a temporary DoS vulnerability that could be performed by
      a directory mirror. Bugfix on 0.2.0.9-alpha; reported by lark.
    * Avoid a potential crash on exit nodes when processing malformed
      input. Remote DoS opportunity. Bugfix on 0.2.0.33.
    * Do not accept incomplete ipv4 addresses (like 192.168.0) as valid.
      Spec conformance issue. Bugfix on Tor 0.0.2pre27.

https://blog.torproject.org/blog/tor-0.2.0.34-stable-released
http://archives.seul.org/or/announce/Feb-2009/msg00000.html
Comment 1 Tomas Hoger 2009-02-13 16:08:42 UTC 
*** Bug 485439 has been marked as a duplicate of this bug. ***
Comment 2 Vincent Danen 2009-02-13 16:16:36 UTC 
*** Bug 485441 has been marked as a duplicate of this bug. ***
Comment 3 Vincent Danen 2009-02-13 16:17:13 UTC 
*** Bug 485442 has been marked as a duplicate of this bug. ***
Comment 4 Tomas Hoger 2009-03-18 07:41:08 UTC 
CVE-2009-0936:
Unspecified vulnerability in Tor before 0.2.0.34 allows attackers to
cause a denial of service (infinite loop) via "corrupt votes."

CVE-2009-0937:
Unspecified vulnerability in Tor before 0.2.0.34 allows directory
mirrors to cause a denial of service via unknown vectors.

CVE-2009-0938:
Unspecified vulnerability in Tor before 0.2.0.34 allows directory
mirrors to cause a denial of service (exit node crash) via "malformed
input."

CVE-2009-0939:
Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which
has unknown impact and attack vectors related to "Spec conformance,"
as demonstrated using 192.168.0.
Comment 5 Vincent Danen 2009-12-04 21:00:41 UTC 
All current versions of Fedora hae tor 0.2.0.35 or higher so this does not affect Fedora.
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