Vulnerability · Published Aug 17, 2023 · Assigned by mitre
CVE-2023-39741
Medium 5.5
In plain English
A medium-severity security flaw in the lrzip package (Alpine). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 71.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
lrzip v0.651 was discovered to contain a heap overflow via the libzpaq::PostProcessor::write(int) function at /libzpaq/libzpaq.cpp. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.23 | lrzip | 0.660-r0 | ALPINE-CVE-2023-39741 |
| Alpine:v3.24 | lrzip | 0.660-r0 | ALPINE-CVE-2023-39741 |
| Debian:12 | lrzip | no fix listed | DEBIAN-CVE-2023-39741 |
| Debian:13 | lrzip | 0.651-3 | DEBIAN-CVE-2023-39741 |
| Debian:14 | lrzip | 0.651-3 | DEBIAN-CVE-2023-39741 |
| Ubuntu:22.04:LTS | lrzip | no fix listed | UBUNTU-CVE-2023-39741 |
| Ubuntu:24.04:LTS | lrzip | no fix listed | UBUNTU-CVE-2023-39741 |
| Ubuntu:25.10 | lrzip | no fix listed | UBUNTU-CVE-2023-39741 |
| Ubuntu:26.04:LTS | lrzip | no fix listed | UBUNTU-CVE-2023-39741 |
| Ubuntu:26.10 | lrzip | no fix listed | UBUNTU-CVE-2023-39741 |