SB2021021721 - Red Hat Enterprise Linux 8 update for perl
Published: February 17, 2021
Security Bulletin ID
SB2021021721
CSH 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 vulnerability.
1) Buffer overflow (CVE-ID: CVE-2020-12723)
CWE-ID: CWE-119 - Memory corruption
CVSSv4: 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:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) áttack.
The vulnerability exists due to a boundary error within the recursive "S_study_chunk" calls. A remote attacker can use a specially crafted regular expression , trigger memory corruption and cause a denial of service condition on the target system.
Remediation
Install update from vendor's website.