Bug 909977 (CVE-2013-0308)

Summary: CVE-2013-0308 git: Incorrect IMAP server's SSL x509.v3 certificate validation in git-imap-send command
Product: [Other] Security Response Reporter: Jan Lieskovsky <jlieskov>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ovasik, security-response-team, todoleza
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-11-13 19:31:20 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: 913587, 913588, 913593, 913595    
Bug Blocks: 909985    
Attachments:
Description Flags
First part (1/3) of proposed upstream patch to correct this
none
Second part (2/3) of proposed upstream patch to correct this
none
Third (final) part (3/3) of proposed upstream patch to correct this
none
Improved second piece of the patchset none

Description Jan Lieskovsky 2013-02-11 15:09:14 UTC 
A security flaw was found in the way git-imap-send command (tool to send a collection of patches from stdin to an IMAP folder) of Git performed IMAP server's SSL x509.v3 certificate validation (server's hostname was previously not verified to match the CN field of the particular certificate). A rogue server could use this flaw to conduct man-in-the-middle (MiTM) attacks, possibly leading to disclosure of sensitive information.

References:
[1] https://www.kernel.org/pub/software/scm/git/docs/git-imap-send.html
[2] https://github.com/git/git/blob/master/imap-send.c#L233
Comment 2 Jan Lieskovsky 2013-02-11 15:15:16 UTC 
This issue affects the version of the git package, as shipped with Red Hat Enterprise Linux 6.

--

This issue affects the versions of the git package, as shipped with Fedora release of 17 and 18.

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This issue affects the version of the git package, as shipped with Fedora EPEL 5.
Comment 3 Jan Lieskovsky 2013-02-19 19:17:00 UTC 
The CVE identifier of CVE-2013-0308 has been assigned to this issue.
Comment 4 Jan Lieskovsky 2013-02-19 19:22:35 UTC 
Created attachment 699610 [details]
First part (1/3) of proposed upstream patch to correct this
Comment 5 Jan Lieskovsky 2013-02-19 19:23:25 UTC 
Created attachment 699611 [details]
Second part (2/3) of proposed upstream patch to correct this
Comment 6 Jan Lieskovsky 2013-02-19 19:24:06 UTC 
Created attachment 699612 [details]
Third (final) part (3/3) of proposed upstream patch to correct this
Comment 8 Adam Tkac 2013-02-20 13:03:22 UTC 
Created attachment 700017 [details]
Improved second piece of the patchset
Comment 10 Stefan Cornelius 2013-02-21 14:43:51 UTC 
Public via https://raw.github.com/git/git/master/Documentation/RelNotes/1.8.1.4.txt or http://marc.info/?l=git&m=136134619013145&w=2
Comment 11 Stefan Cornelius 2013-02-21 14:46:34 UTC 
Created git tracking bugs for this issue

Affects: fedora-all [bug 913593]
Affects: epel-5 [bug 913595]
Comment 13 errata-xmlrpc 2013-03-04 21:13:56 UTC 
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0589 https://rhn.redhat.com/errata/RHSA-2013-0589.html
Comment 14 Fedora Update System 2013-06-12 20:09:44 UTC 
git-1.8.2.1-1.el5 has been pushed to the Fedora EPEL 5 stable repository.  If problems still persist, please make note of it in this bug report.