SB2021080531 - Information disclosure in Linux kernel SCTP subsystem
Published: August 5, 2021 Updated: March 8, 2022
Security Bulletin ID
SB2021080531
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Missing initialization of resource (CVE-ID: CVE-2021-3655)
CWE-ID: CWE-909 - Missing initialization of resource
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to missing initialization of resource in the Linux kernel when processing inbound SCTP packets. A remote attacker can send specially crafted SCTP packets to the system and force the kernel to read uninitialized memory.
Remediation
Install update from vendor's website.