Infinite loop in xz - CVE-2021-29482
Published: March 27, 2024
Vulnerability identifier: #VU87849
CSH Severity: Medium
CVSSv4.0: 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
CVE-ID: CVE-2021-29482
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
xz
xz
Software vendor:
ulikunitz
ulikunitz
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due the function readUvarint used to read the xz container format may not terminate a loop providing malicious input. A remote attacker can consume all available system resources and cause denial of service conditions.
Remediation
Install updates from vendor's website.