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CVE-2017-9800

Publication date 10 August 2017

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

A maliciously constructed svn+ssh:// URL would cause Subversion clients before 1.8.19, 1.9.x before 1.9.7, and 1.10.0.x through 1.10.0-alpha3 to run an arbitrary shell command. Such a URL could be generated by a malicious server, by a malicious user committing to a honest server (to attack another user of that server's repositories), or by a proxy server. The vulnerability affects all clients, including those that use file://, http://, and plain (untunneled) svn://.

From the Ubuntu Security Team

Joern Schneeweisz discovered that Subversion did not properly handle host names in 'svn+ssh://' URLs. A remote attacker could use this to construct a subversion repository that when accessed could run arbitrary code with the privileges of the user.

Status

Package Ubuntu Release Status
subversion 17.10 artful
Not affected
17.04 zesty
Fixed 1.9.5-1ubuntu1.1
16.04 LTS xenial
Fixed 1.9.3-2ubuntu1.1
14.04 LTS trusty
Fixed 1.8.8-1ubuntu3.3

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3388-1
    • Subversion vulnerabilities
    • 11 August 2017
    • USN-3388-2
    • Subversion vulnerabilities
    • 24 October 2017

Other references