#VU32287 Input validation error in Mercurial - CVE-2016-3068

Vulnerability identifier: #VU32287

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2016-3068

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Mercurial
Client/Desktop applications / Other client software

Vendor: Mercurial

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Mercurial before 3.7.3 allows remote attackers to execute arbitrary code via a crafted git ext:: URL when cloning a subrepository.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Mercurial: 3.7.0 - 3.7.2

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2016-April/181505.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-April/181542.html
https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00016.html
https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00017.html
https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00018.html
https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00043.html
https://rhn.redhat.com/errata/RHSA-2016-0706.html
https://www.debian.org/security/2016/dsa-3542
https://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
https://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
https://www.securityfocus.com/bid/85733
https://security.gentoo.org/glsa/201612-19
https://selenic.com/repo/hg-stable/rev/34d43cb85de8
https://www.mercurial-scm.org/wiki/WhatsNew#Mercurial_3.7.3_.282016-3-29.29

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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.