Use-after-free in lrzip - CVE-2021-27347
Published: May 25, 2022 / Updated: May 25, 2022
Vulnerability identifier: #VU63644
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2021-27347
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ckolivas (Con Kolivas)
Affected software:
lrzip
lrzip
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to a use-after-free error in lzma_decompress_buf function in stream.c. A remote attacker can trick the victim to open a specially crafted compressed file and trigger denial of service conditions.
How to mitigate CVE-2021-27347
Install updates from vendor's website.