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Category:   Application (Generic)  >   Apache Subversion Vendors:   Apache Software Foundation, subversion.tigris.org
(Red Hat Issues Fix) Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System
SecurityTracker Alert ID:  1039167
SecurityTracker URL:  http://securitytracker.com/id/1039167
CVE Reference:   CVE-2017-9800   (Links to External Site)
Date:  Aug 16 2017
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0.0 - 1.8.18, 1.9.0 - 1.9.6, 1.10.0-alpha3
Description:   A vulnerability was reported in Apache Subversion. A remote user can execute arbitrary commands on the target system.

A remote user (e.g., repository, proxy server) can return a specially crafted 'svn+ssh://' URL to execute arbitrary shell commands on the target user' system. The code will run with the privileges of the target user.

The vulnerability can be triggered during 'checkout', 'export', 'update', and 'switch' commands. The vulnerability can also be triggered when using 'svnsync sync' with one URL argument and the downloaded tree contains 'svn:externals properties;'

Joern Schneeweisz of Recurity Labs reported this vulnerability.

Impact:   A remote user can execute arbitrary shell commands on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://access.redhat.com/errata/RHSA-2017:2480

Vendor URL:  access.redhat.com/errata/RHSA-2017:2480 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  7

Message History:   This archive entry is a follow-up to the message listed below.
Aug 10 2017 Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System



 Source Message Contents

Subject:  [RHSA-2017:2480-01] Important: subversion security update

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

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

Synopsis:          Important: subversion security update
Advisory ID:       RHSA-2017:2480-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://access.redhat.com/errata/RHSA-2017:2480
Issue date:        2017-08-15
CVE Names:         CVE-2017-9800 
=====================================================================

1. Summary:

An update for subversion is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64
Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64
Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64
Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

Subversion (SVN) is a concurrent version control system which enables one
or more users to collaborate in developing and maintaining a hierarchy of
files and directories while keeping a history of all changes.

Security Fix(es):

* A shell command injection flaw related to the handling of "svn+ssh" URLs
has been discovered in Subversion. An attacker could use this flaw to
execute shell commands with the privileges of the user running the
Subversion client, for example when performing a "checkout" or "update"
action on a malicious repository, or a legitimate repository containing a
malicious commit. (CVE-2017-9800)

Red Hat would like to thank the Subversion Team for reporting this issue.

4. Solution:

For details on how to apply this update, which includes the changes
described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, for the update to take effect, you
must restart the httpd daemon, if you are using mod_dav_svn, and the
svnserve daemon, if you are serving Subversion repositories via the svn://
protocol.

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

1479686 - CVE-2017-9800 subversion: Command injection through clients via malicious svn+ssh URLs

6. Package List:

Red Hat Enterprise Linux Client Optional (v. 7):

Source:
subversion-1.7.14-11.el7_4.src.rpm

x86_64:
mod_dav_svn-1.7.14-11.el7_4.x86_64.rpm
subversion-1.7.14-11.el7_4.i686.rpm
subversion-1.7.14-11.el7_4.x86_64.rpm
subversion-debuginfo-1.7.14-11.el7_4.i686.rpm
subversion-debuginfo-1.7.14-11.el7_4.x86_64.rpm
subversion-devel-1.7.14-11.el7_4.i686.rpm
subversion-devel-1.7.14-11.el7_4.x86_64.rpm
subversion-gnome-1.7.14-11.el7_4.i686.rpm
subversion-gnome-1.7.14-11.el7_4.x86_64.rpm
subversion-javahl-1.7.14-11.el7_4.i686.rpm
subversion-javahl-1.7.14-11.el7_4.x86_64.rpm
subversion-kde-1.7.14-11.el7_4.i686.rpm
subversion-kde-1.7.14-11.el7_4.x86_64.rpm
subversion-libs-1.7.14-11.el7_4.i686.rpm
subversion-libs-1.7.14-11.el7_4.x86_64.rpm
subversion-perl-1.7.14-11.el7_4.i686.rpm
subversion-perl-1.7.14-11.el7_4.x86_64.rpm
subversion-python-1.7.14-11.el7_4.x86_64.rpm
subversion-ruby-1.7.14-11.el7_4.i686.rpm
subversion-ruby-1.7.14-11.el7_4.x86_64.rpm
subversion-tools-1.7.14-11.el7_4.x86_64.rpm

Red Hat Enterprise Linux ComputeNode Optional (v. 7):

Source:
subversion-1.7.14-11.el7_4.src.rpm

x86_64:
mod_dav_svn-1.7.14-11.el7_4.x86_64.rpm
subversion-1.7.14-11.el7_4.i686.rpm
subversion-1.7.14-11.el7_4.x86_64.rpm
subversion-debuginfo-1.7.14-11.el7_4.i686.rpm
subversion-debuginfo-1.7.14-11.el7_4.x86_64.rpm
subversion-devel-1.7.14-11.el7_4.i686.rpm
subversion-devel-1.7.14-11.el7_4.x86_64.rpm
subversion-gnome-1.7.14-11.el7_4.i686.rpm
subversion-gnome-1.7.14-11.el7_4.x86_64.rpm
subversion-javahl-1.7.14-11.el7_4.i686.rpm
subversion-javahl-1.7.14-11.el7_4.x86_64.rpm
subversion-kde-1.7.14-11.el7_4.i686.rpm
subversion-kde-1.7.14-11.el7_4.x86_64.rpm
subversion-libs-1.7.14-11.el7_4.i686.rpm
subversion-libs-1.7.14-11.el7_4.x86_64.rpm
subversion-perl-1.7.14-11.el7_4.i686.rpm
subversion-perl-1.7.14-11.el7_4.x86_64.rpm
subversion-python-1.7.14-11.el7_4.x86_64.rpm
subversion-ruby-1.7.14-11.el7_4.i686.rpm
subversion-ruby-1.7.14-11.el7_4.x86_64.rpm
subversion-tools-1.7.14-11.el7_4.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
subversion-1.7.14-11.el7_4.src.rpm

aarch64:
mod_dav_svn-1.7.14-11.el7_4.aarch64.rpm
subversion-1.7.14-11.el7_4.aarch64.rpm
subversion-debuginfo-1.7.14-11.el7_4.aarch64.rpm
subversion-gnome-1.7.14-11.el7_4.aarch64.rpm
subversion-libs-1.7.14-11.el7_4.aarch64.rpm

ppc64:
mod_dav_svn-1.7.14-11.el7_4.ppc64.rpm
subversion-1.7.14-11.el7_4.ppc.rpm
subversion-1.7.14-11.el7_4.ppc64.rpm
subversion-debuginfo-1.7.14-11.el7_4.ppc.rpm
subversion-debuginfo-1.7.14-11.el7_4.ppc64.rpm
subversion-gnome-1.7.14-11.el7_4.ppc.rpm
subversion-gnome-1.7.14-11.el7_4.ppc64.rpm
subversion-libs-1.7.14-11.el7_4.ppc.rpm
subversion-libs-1.7.14-11.el7_4.ppc64.rpm

ppc64le:
mod_dav_svn-1.7.14-11.el7_4.ppc64le.rpm
subversion-1.7.14-11.el7_4.ppc64le.rpm
subversion-debuginfo-1.7.14-11.el7_4.ppc64le.rpm
subversion-gnome-1.7.14-11.el7_4.ppc64le.rpm
subversion-libs-1.7.14-11.el7_4.ppc64le.rpm

s390x:
mod_dav_svn-1.7.14-11.el7_4.s390x.rpm
subversion-1.7.14-11.el7_4.s390.rpm
subversion-1.7.14-11.el7_4.s390x.rpm
subversion-debuginfo-1.7.14-11.el7_4.s390.rpm
subversion-debuginfo-1.7.14-11.el7_4.s390x.rpm
subversion-gnome-1.7.14-11.el7_4.s390.rpm
subversion-gnome-1.7.14-11.el7_4.s390x.rpm
subversion-libs-1.7.14-11.el7_4.s390.rpm
subversion-libs-1.7.14-11.el7_4.s390x.rpm

x86_64:
mod_dav_svn-1.7.14-11.el7_4.x86_64.rpm
subversion-1.7.14-11.el7_4.i686.rpm
subversion-1.7.14-11.el7_4.x86_64.rpm
subversion-debuginfo-1.7.14-11.el7_4.i686.rpm
subversion-debuginfo-1.7.14-11.el7_4.x86_64.rpm
subversion-gnome-1.7.14-11.el7_4.i686.rpm
subversion-gnome-1.7.14-11.el7_4.x86_64.rpm
subversion-libs-1.7.14-11.el7_4.i686.rpm
subversion-libs-1.7.14-11.el7_4.x86_64.rpm

Red Hat Enterprise Linux Server Optional (v. 7):

aarch64:
subversion-debuginfo-1.7.14-11.el7_4.aarch64.rpm
subversion-devel-1.7.14-11.el7_4.aarch64.rpm
subversion-javahl-1.7.14-11.el7_4.aarch64.rpm
subversion-kde-1.7.14-11.el7_4.aarch64.rpm
subversion-perl-1.7.14-11.el7_4.aarch64.rpm
subversion-python-1.7.14-11.el7_4.aarch64.rpm
subversion-ruby-1.7.14-11.el7_4.aarch64.rpm
subversion-tools-1.7.14-11.el7_4.aarch64.rpm

ppc64:
subversion-debuginfo-1.7.14-11.el7_4.ppc.rpm
subversion-debuginfo-1.7.14-11.el7_4.ppc64.rpm
subversion-devel-1.7.14-11.el7_4.ppc.rpm
subversion-devel-1.7.14-11.el7_4.ppc64.rpm
subversion-javahl-1.7.14-11.el7_4.ppc.rpm
subversion-javahl-1.7.14-11.el7_4.ppc64.rpm
subversion-kde-1.7.14-11.el7_4.ppc.rpm
subversion-kde-1.7.14-11.el7_4.ppc64.rpm
subversion-perl-1.7.14-11.el7_4.ppc.rpm
subversion-perl-1.7.14-11.el7_4.ppc64.rpm
subversion-python-1.7.14-11.el7_4.ppc64.rpm
subversion-ruby-1.7.14-11.el7_4.ppc.rpm
subversion-ruby-1.7.14-11.el7_4.ppc64.rpm
subversion-tools-1.7.14-11.el7_4.ppc64.rpm

ppc64le:
subversion-debuginfo-1.7.14-11.el7_4.ppc64le.rpm
subversion-devel-1.7.14-11.el7_4.ppc64le.rpm
subversion-javahl-1.7.14-11.el7_4.ppc64le.rpm
subversion-kde-1.7.14-11.el7_4.ppc64le.rpm
subversion-perl-1.7.14-11.el7_4.ppc64le.rpm
subversion-python-1.7.14-11.el7_4.ppc64le.rpm
subversion-ruby-1.7.14-11.el7_4.ppc64le.rpm
subversion-tools-1.7.14-11.el7_4.ppc64le.rpm

s390x:
subversion-debuginfo-1.7.14-11.el7_4.s390.rpm
subversion-debuginfo-1.7.14-11.el7_4.s390x.rpm
subversion-devel-1.7.14-11.el7_4.s390.rpm
subversion-devel-1.7.14-11.el7_4.s390x.rpm
subversion-javahl-1.7.14-11.el7_4.s390.rpm
subversion-javahl-1.7.14-11.el7_4.s390x.rpm
subversion-kde-1.7.14-11.el7_4.s390.rpm
subversion-kde-1.7.14-11.el7_4.s390x.rpm
subversion-perl-1.7.14-11.el7_4.s390.rpm
subversion-perl-1.7.14-11.el7_4.s390x.rpm
subversion-python-1.7.14-11.el7_4.s390x.rpm
subversion-ruby-1.7.14-11.el7_4.s390.rpm
subversion-ruby-1.7.14-11.el7_4.s390x.rpm
subversion-tools-1.7.14-11.el7_4.s390x.rpm

x86_64:
subversion-debuginfo-1.7.14-11.el7_4.i686.rpm
subversion-debuginfo-1.7.14-11.el7_4.x86_64.rpm
subversion-devel-1.7.14-11.el7_4.i686.rpm
subversion-devel-1.7.14-11.el7_4.x86_64.rpm
subversion-javahl-1.7.14-11.el7_4.i686.rpm
subversion-javahl-1.7.14-11.el7_4.x86_64.rpm
subversion-kde-1.7.14-11.el7_4.i686.rpm
subversion-kde-1.7.14-11.el7_4.x86_64.rpm
subversion-perl-1.7.14-11.el7_4.i686.rpm
subversion-perl-1.7.14-11.el7_4.x86_64.rpm
subversion-python-1.7.14-11.el7_4.x86_64.rpm
subversion-ruby-1.7.14-11.el7_4.i686.rpm
subversion-ruby-1.7.14-11.el7_4.x86_64.rpm
subversion-tools-1.7.14-11.el7_4.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
subversion-1.7.14-11.el7_4.src.rpm

x86_64:
mod_dav_svn-1.7.14-11.el7_4.x86_64.rpm
subversion-1.7.14-11.el7_4.i686.rpm
subversion-1.7.14-11.el7_4.x86_64.rpm
subversion-debuginfo-1.7.14-11.el7_4.i686.rpm
subversion-debuginfo-1.7.14-11.el7_4.x86_64.rpm
subversion-gnome-1.7.14-11.el7_4.i686.rpm
subversion-gnome-1.7.14-11.el7_4.x86_64.rpm
subversion-libs-1.7.14-11.el7_4.i686.rpm
subversion-libs-1.7.14-11.el7_4.x86_64.rpm

Red Hat Enterprise Linux Workstation Optional (v. 7):

x86_64:
subversion-debuginfo-1.7.14-11.el7_4.i686.rpm
subversion-debuginfo-1.7.14-11.el7_4.x86_64.rpm
subversion-devel-1.7.14-11.el7_4.i686.rpm
subversion-devel-1.7.14-11.el7_4.x86_64.rpm
subversion-javahl-1.7.14-11.el7_4.i686.rpm
subversion-javahl-1.7.14-11.el7_4.x86_64.rpm
subversion-kde-1.7.14-11.el7_4.i686.rpm
subversion-kde-1.7.14-11.el7_4.x86_64.rpm
subversion-perl-1.7.14-11.el7_4.i686.rpm
subversion-perl-1.7.14-11.el7_4.x86_64.rpm
subversion-python-1.7.14-11.el7_4.x86_64.rpm
subversion-ruby-1.7.14-11.el7_4.i686.rpm
subversion-ruby-1.7.14-11.el7_4.x86_64.rpm
subversion-tools-1.7.14-11.el7_4.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/

7. References:

https://access.redhat.com/security/cve/CVE-2017-9800
https://access.redhat.com/security/updates/classification/#important

8. Contact:

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

Copyright 2017 Red Hat, Inc.
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