SB2023012360 - Red Hat Enterprise Linux 9 update for libtasn1
Published: January 23, 2023
Security Bulletin ID
SB2023012360
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) Off-by-one (CVE-ID: CVE-2021-46848)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an ETYPE_OK off-by-one error in asn1_encode_simple_der in Libtasn1. A remote attacker can pass specially crafted data to the application, trigger an off-by-one error and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.