#VU7220 Remote code execution in Mercurial - CVE-2017-9462
Published: June 28, 2017 / Updated: September 14, 2018
Vulnerability identifier: #VU7220
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber
CVE-ID: CVE-2017-9462
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Mercurial
Mercurial
Software vendor:
Mercurial
Mercurial
Description
The vulnerability allows a remote authenticated attacker to execute arbitrary code on the target system.
The weakness exists due to improper input validation in "hg serve --stdio". A remote attacker can use --debugger as a repository name and consequently execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to improper input validation in "hg serve --stdio". A remote attacker can use --debugger as a repository name and consequently execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Update to version 4.1.3 or later.