#VU12417 Command injection in Redmine - CVE-2017-18026

Vulnerability identifier: #VU12417

Vulnerability risk: Low

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:Clear]

CVE-ID: CVE-2017-18026

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Redmine
Web applications / CRM systems

Vendor: Ruby

Description

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

The weakness exists due to improper blocking of the --config and --debugger flags to the Mercurial hg program. A remote attacker can execute arbitrary commands through the Mercurial adapter via vectors involving a branch whose name begins with a --config= or --debugger= substring.

Mitigation
Update to versions 3.2.9, 3.3.6 or 3.4.4.

Vulnerable software versions

Redmine: 3.2.0 - 3.4.3

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External links
https://www.redmine.org/projects/redmine/wiki/Security_Advisories

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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.