Input validation error in libgit2 - CVE-2018-19456
Published: January 12, 2019 / Updated: January 14, 2019
Vulnerability identifier: #VU16964
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/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-2018-19456
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: libgit2.github.com
Affected software:
libgit2
libgit2
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input. A remote unauthenticated attacker can trick the victim into opening a specially crafted .gitmodules file and execute arbitrary code with elevated privileges.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2018-19456
Install update from vendor's website.