#VU7886 OS command injection in Subversion - CVE-2017-9800

Vulnerability identifier: #VU7886

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-9800

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Subversion
Server applications / Frameworks for developing and running applications

Vendor: Apache Foundation

Description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The weakness exists due to command injection flaw. A remote attacker (e.g., repository, proxy server) can return a specially crafted 'svn+ssh://' URL during 'checkout', 'export', 'update', and 'switch' commands and execute arbitrary shell commands with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 1.8.19 or 1.9.7.

Vulnerable software versions

Subversion: 1.8.0 - 1.8.18, 1.9.0 - 1.9.6

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External links
https://subversion.apache.org/security/CVE-2017-9800-advisory.txt

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.