Use-after-free in lrzip - CVE-2022-26291
Published: May 25, 2022 / Updated: May 25, 2022
Vulnerability identifier: #VU63638
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-26291
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a Denial of Service attack.
The vulnerability exists due to multiple concurrency use-after-free between zpaq_decompress_buf() and clear_rulist() functions when processing a crafted Irz file. A remote attacker can trick the victim to open a specially crafted Irz file and cause a Denial of Service (DoS).
Affected software
lrzip
Ubuntu
lrzip (Ubuntu package)
lrzip (Debian package)
Ubuntu
lrzip (Ubuntu package)
lrzip (Debian package)
How to mitigate CVE-2022-26291
Install update from vendor's website.
lrzip - update to 0.650
lrzip (Ubuntu package) - addressed in versions Ubuntu Pro, 0.631+git180528-1+deb10u1build0.20.04.1, 0.631-1+deb9u3build0.18.04.1, 0.651-2ubuntu0.22.04.1, 0.651-2ubuntu0.22.10.1
lrzip (Debian package) - addressed in versions 0.631+git180528-1+deb10u1, 0.641-1+deb11u1
lrzip (Ubuntu package) - addressed in versions Ubuntu Pro, 0.631+git180528-1+deb10u1build0.20.04.1, 0.631-1+deb9u3build0.18.04.1, 0.651-2ubuntu0.22.04.1, 0.651-2ubuntu0.22.10.1
lrzip (Debian package) - addressed in versions 0.631+git180528-1+deb10u1, 0.641-1+deb11u1