Input validation error in mercurial (Alpine package)

1) Input validation error

EUVDB-ID: #VU32315

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-2015-7545

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The (1) git-remote-ext and (2) unspecified other remote helper programs in Git before 2.3.10, 2.4.x before 2.4.10, 2.5.x before 2.5.4, and 2.6.x before 2.6.1 do not properly restrict the allowed protocols, which might allow remote attackers to execute arbitrary code via a URL in a (a) .gitmodules file or (b) unknown other sources in a submodule.

Mitigation

Install update from vendor's website.

Vulnerable software versions

mercurial (Alpine package): 2.3.2-r0 - 3.4-r0

CPE2.3

• cpe:2.3:a:alpine:mercurial_alpine_package:2.3.2-r0:*:*:*:*:alpine_linux:*:2.5
• cpe:2.3:a:alpine:mercurial_alpine_package:3.4-r0:*:*:*:*:alpine_linux:*:3.1

External links

https://git.alpinelinux.org/aports/commit/?id=43622bb26d2e04aa61ae8bfb905ebe671b8abf10
https://git.alpinelinux.org/aports/commit/?id=77b58fc9d87f6ac864985f841a3dce7ca4fed4b5

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.