#VU14212 Integer overflow in Mercurial - CVE-2018-13347
Published: August 7, 2018
Vulnerability identifier: #VU14212
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-13347
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mercurial
Mercurial
Software vendor:
Mercurial
Mercurial
Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to integer overflow when the mpatch_decode function in mpatch.c mishandles certain situations where there should be at least 12 bytes remaining after the current position in the patch data, but actually are not. A remote unauthenticated attacker can supply specially crafted input, trigger memory corruption and cause the service to crash.
Remediation
Update to version 4.6.1.