Use-after-free in Oniguruma - CVE-2019-13224
Published: September 6, 2019
Vulnerability identifier: #VU20904
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-2019-13224
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: K.Kosako
Affected software:
Oniguruma
Oniguruma
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the onig_new_deluxe() function in regext.c in Oniguruma library when processing regular expressions. A remote attacker can pass specially crafted input to the application using the vulnerable library version, trigger use-after-free error and perform denial of service attack or execute arbitrary code on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
How to mitigate CVE-2019-13224
Install updates from vendor's website.