Buffer under-read in Mercurial - CVE-2018-13348
Published: August 7, 2018
Vulnerability identifier: #VU14213
CSH Severity: Low
CVSS v4: 8.7 [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]
CVE-ID: CVE-2018-13348
CWE-ID: CWE-124
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to buffer under-read 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.
Affected software
Mercurial
Opensuse
Opensuse
How to mitigate CVE-2018-13348
Update to version 4.6.1.
Mercurial - update to 4.6.1