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Category:   Application (Generic)  >   GIT Vendors:   kernel.org
(Red Hat Issues Fix) GIT gitweb Input Validation Flaw Permits Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1024918
SecurityTracker URL:  http://securitytracker.com/id/1024918
CVE Reference:   CVE-2010-3906   (Links to External Site)
Date:  Dec 22 2010
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.7.3.3 and prior versions
Description:   A vulnerability was reported in GIT. A remote user can conduct cross-site scripting attacks.

The 'gitweb/gitweb.perl' script does not properly filter HTML code from user-supplied input before displaying the input. A remote user can cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the gitweb software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Emanuele Gentili reported this vulnerability.
Impact:   A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the gitweb software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2010-1003.html
Vendor URL:  git.kernel.org/ (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Red Hat Enterprise)

Message History:   This archive entry is a follow-up to the message listed below.
Dec 16 2010 GIT gitweb Input Validation Flaw Permits Cross-Site Scripting Attacks


 Source Message Contents
Date:  Tue, 21 Dec 2010 13:02:29 -0500
Subject:  [RHSA-2010:1003-01] Moderate: git security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: git security update
Advisory ID:       RHSA-2010:1003-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2010-1003.html
Issue date:        2010-12-21
CVE Names:         CVE-2010-3906 
=====================================================================

1. Summary:

Updated git packages that fix one security issue are now available for
Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux HPC Node Optional (v. 6) - noarch, x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 6) - i386, noarch, ppc64, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, noarch, x86_64
Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, noarch, x86_64

3. Description:

Git is a fast, scalable, distributed revision control system.

A cross-site scripting (XSS) flaw was found in gitweb, a simple web
interface for Git repositories. A remote attacker could perform an XSS
attack against victims by tricking them into visiting a specially-crafted
gitweb URL. (CVE-2010-3906)

All gitweb users should upgrade to these updated packages, which contain a
backported patch to correct this issue.

4. Solution:

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

663609 - CVE-2010-3906 Git (gitweb): XSS due to missing escaping of HTML element attributes

6. Package List:

Red Hat Enterprise Linux Desktop Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/git-1.7.1-2.el6_0.1.src.rpm

i386:
git-1.7.1-2.el6_0.1.i686.rpm
git-daemon-1.7.1-2.el6_0.1.i686.rpm
git-debuginfo-1.7.1-2.el6_0.1.i686.rpm

noarch:
emacs-git-1.7.1-2.el6_0.1.noarch.rpm
emacs-git-el-1.7.1-2.el6_0.1.noarch.rpm
git-all-1.7.1-2.el6_0.1.noarch.rpm
git-cvs-1.7.1-2.el6_0.1.noarch.rpm
git-email-1.7.1-2.el6_0.1.noarch.rpm
git-gui-1.7.1-2.el6_0.1.noarch.rpm
git-svn-1.7.1-2.el6_0.1.noarch.rpm
gitk-1.7.1-2.el6_0.1.noarch.rpm
gitweb-1.7.1-2.el6_0.1.noarch.rpm
perl-Git-1.7.1-2.el6_0.1.noarch.rpm

x86_64:
git-1.7.1-2.el6_0.1.x86_64.rpm
git-daemon-1.7.1-2.el6_0.1.x86_64.rpm
git-debuginfo-1.7.1-2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/git-1.7.1-2.el6_0.1.src.rpm

noarch:
emacs-git-1.7.1-2.el6_0.1.noarch.rpm
emacs-git-el-1.7.1-2.el6_0.1.noarch.rpm
git-all-1.7.1-2.el6_0.1.noarch.rpm
git-cvs-1.7.1-2.el6_0.1.noarch.rpm
git-email-1.7.1-2.el6_0.1.noarch.rpm
git-gui-1.7.1-2.el6_0.1.noarch.rpm
git-svn-1.7.1-2.el6_0.1.noarch.rpm
gitk-1.7.1-2.el6_0.1.noarch.rpm
gitweb-1.7.1-2.el6_0.1.noarch.rpm
perl-Git-1.7.1-2.el6_0.1.noarch.rpm

x86_64:
git-1.7.1-2.el6_0.1.x86_64.rpm
git-daemon-1.7.1-2.el6_0.1.x86_64.rpm
git-debuginfo-1.7.1-2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/git-1.7.1-2.el6_0.1.src.rpm

i386:
git-1.7.1-2.el6_0.1.i686.rpm
git-debuginfo-1.7.1-2.el6_0.1.i686.rpm

noarch:
perl-Git-1.7.1-2.el6_0.1.noarch.rpm

ppc64:
git-1.7.1-2.el6_0.1.ppc64.rpm
git-debuginfo-1.7.1-2.el6_0.1.ppc64.rpm

s390x:
git-1.7.1-2.el6_0.1.s390x.rpm
git-debuginfo-1.7.1-2.el6_0.1.s390x.rpm

x86_64:
git-1.7.1-2.el6_0.1.x86_64.rpm
git-debuginfo-1.7.1-2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/git-1.7.1-2.el6_0.1.src.rpm

i386:
git-daemon-1.7.1-2.el6_0.1.i686.rpm
git-debuginfo-1.7.1-2.el6_0.1.i686.rpm

noarch:
emacs-git-1.7.1-2.el6_0.1.noarch.rpm
emacs-git-el-1.7.1-2.el6_0.1.noarch.rpm
git-all-1.7.1-2.el6_0.1.noarch.rpm
git-cvs-1.7.1-2.el6_0.1.noarch.rpm
git-email-1.7.1-2.el6_0.1.noarch.rpm
git-gui-1.7.1-2.el6_0.1.noarch.rpm
git-svn-1.7.1-2.el6_0.1.noarch.rpm
gitk-1.7.1-2.el6_0.1.noarch.rpm
gitweb-1.7.1-2.el6_0.1.noarch.rpm

ppc64:
git-daemon-1.7.1-2.el6_0.1.ppc64.rpm
git-debuginfo-1.7.1-2.el6_0.1.ppc64.rpm

s390x:
git-daemon-1.7.1-2.el6_0.1.s390x.rpm
git-debuginfo-1.7.1-2.el6_0.1.s390x.rpm

x86_64:
git-daemon-1.7.1-2.el6_0.1.x86_64.rpm
git-debuginfo-1.7.1-2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/git-1.7.1-2.el6_0.1.src.rpm

i386:
git-1.7.1-2.el6_0.1.i686.rpm
git-debuginfo-1.7.1-2.el6_0.1.i686.rpm

noarch:
perl-Git-1.7.1-2.el6_0.1.noarch.rpm

x86_64:
git-1.7.1-2.el6_0.1.x86_64.rpm
git-debuginfo-1.7.1-2.el6_0.1.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/git-1.7.1-2.el6_0.1.src.rpm

i386:
git-daemon-1.7.1-2.el6_0.1.i686.rpm
git-debuginfo-1.7.1-2.el6_0.1.i686.rpm

noarch:
emacs-git-1.7.1-2.el6_0.1.noarch.rpm
emacs-git-el-1.7.1-2.el6_0.1.noarch.rpm
git-all-1.7.1-2.el6_0.1.noarch.rpm
git-cvs-1.7.1-2.el6_0.1.noarch.rpm
git-email-1.7.1-2.el6_0.1.noarch.rpm
git-gui-1.7.1-2.el6_0.1.noarch.rpm
git-svn-1.7.1-2.el6_0.1.noarch.rpm
gitk-1.7.1-2.el6_0.1.noarch.rpm
gitweb-1.7.1-2.el6_0.1.noarch.rpm

x86_64:
git-daemon-1.7.1-2.el6_0.1.x86_64.rpm
git-debuginfo-1.7.1-2.el6_0.1.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/#package

7. References:

https://www.redhat.com/security/data/cve/CVE-2010-3906.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert@redhat.com>.  More contact
details at https://www.redhat.com/security/team/contact/

Copyright 2010 Red Hat, Inc.
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