SB2020110528 - Red Hat Enterprise Linux 8 update for pcre2
Published: November 5, 2020
Security Bulletin ID
SB2020110528
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2019-20454)
The vulnerability allows a remote attacker to gain access to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the "do_extuni_no_utf in pcre2_jit_compile.c" file when the pattern X is JIT compiled and used to match specially crafted subjects in non-UTF mode. A remote attacker can trigger out-of-bounds read error and crash the affected application.
Remediation
Install update from vendor's website.