Use-after-free in lrzip



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-26291
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
 lrzip
Other software / Other software solutions

Vendor ckolivas (Con Kolivas)

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU63638

Risk: Low

CVSSv4.0: 1.2 [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-2022-26291

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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).

Mitigation

Install update from vendor's website.

Vulnerable software versions

lrzip: 0.5 - 0.641

CPE2.3 External links

https://github.com/ckolivas/lrzip/issues/206
https://lists.debian.org/debian-lts-announce/2022/04/msg00012.html
https://www.debian.org/security/2022/dsa-5145


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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