SB2021111036 - Red Hat Enterprise Linux 8 update for linuxptp
Published: November 10, 2021
Security Bulletin ID
SB2021111036
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) Memory leak (CVE-ID: CVE-2021-3571)
CWE-ID: CWE-401 - Missing release of memory after effective lifetime
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain access to sensitive information or perform DoS attack on the target system.
The vulnerability exists due memory leak in ptp4l program when processing PTP one-step sync messages. A remote attacker can send specially crafted one-step sync messages to the system, force the application to leak memory and perform denial of service attack or gain access to sensitive information.
Remediation
Install update from vendor's website.