SB2021022801 - Double free in Squid
Published: February 28, 2021
Security Bulletin ID
SB2021022801
CSH Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing "acl" directove. A local user with ability to supply a custom ACL rule for the first and second addresses can trigger a double free error and crash the service or execute arbitrary code with elevated privileges.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.