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Category:   Application (Generic)  >   Apache Subversion Vendors:   Apache Software Foundation, subversion.tigris.org
Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System
SecurityTracker Alert ID:  1039127
SecurityTracker URL:  http://securitytracker.com/id/1039127
CVE Reference:   CVE-2017-9800   (Links to External Site)
Date:  Aug 10 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:   The vendor has issued a fix (1.8.19, 1.9.7).

The vendor advisory is available at:

http://subversion.apache.org/security/CVE-2017-9800-advisory.txt

Vendor URL:  subversion.apache.org/security/CVE-2017-9800-advisory.txt (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Aug 11 2017 (Ubuntu Issues Fix) Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System
Ubuntu has issued a fix for Ubuntu Linux 14.04 LTS, 16.04 LTS, and 17.04.
Aug 16 2017 (Oracle Issues Fix for Oracle Linux) Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System
Oracle has issued a fix for Oracle Linux 7.
Sep 20 2017 (Apple Issues Fix for Apple Xcode) Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System
Apple has issued a fix for Apple Xcode.
Oct 25 2017 (Ubuntu Issues Fix) Apache Subversion 'svn+ssh://' URL Processing Flaw Lets Remote Users Execute Arbitrary Commands on the Target System
Ubuntu has issued a fix for Ubuntu Linux 12.04 ESM.



 Source Message Contents

Subject:  http://subversion.apache.org/security/CVE-2017-9800-advisory.txt

 
 


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