Heap-based buffer overflow in PCRE2 - CVE-2017-8786
Published: May 5, 2017 / Updated: December 5, 2020
Vulnerability identifier: #VU39076
CSH Severity: High
CVSS v4: 9.3 [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]
CVE-ID: CVE-2017-8786
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in pcre2test.c in PCRE2 10.23. A remote attacker can use a crafted regular expression. to trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
PCRE2
Gentoo Linux
Fedora
pcre2
Gentoo Linux
Fedora
pcre2
How to mitigate CVE-2017-8786
Install update from vendor's website.
pcre2 - addressed in versions 10.21-20.el6, 10.21-21.el6