Vulnerability · Published Jun 10, 2021 · Assigned by mitre
CVE-2021-27347
Medium 5.5
In plain English
A medium-severity security flaw in the lrzip package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.7%top 46.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
Use after free in lzma_decompress_buf function in stream.c in Irzip 0.631 allows attackers to cause Denial of Service (DoS) via a crafted compressed file.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | lrzip | 0.640-r0 | ALPINE-CVE-2021-27347 |
| Alpine:v3.21 | lrzip | 0.640-r0 | ALPINE-CVE-2021-27347 |
| Alpine:v3.22 | lrzip | 0.640-r0 | ALPINE-CVE-2021-27347 |
| Alpine:v3.23 | lrzip | 0.640-r0 | ALPINE-CVE-2021-27347 |
| Alpine:v3.24 | lrzip | 0.640-r0 | ALPINE-CVE-2021-27347 |
| Debian:12 | lrzip | 0.640-1 | DEBIAN-CVE-2021-27347 |
| Debian:13 | lrzip | 0.640-1 | DEBIAN-CVE-2021-27347 |
| Debian:14 | lrzip | 0.640-1 | DEBIAN-CVE-2021-27347 |
| Ubuntu:22.04:LTS | lrzip | 0.651-2ubuntu0.22.04.1 | USN-5840-1 |
Affected products (as reported)
References
- https://github.com/ckolivas/lrzip/issues/165 x_refsource_MISC
- [debian-lts-announce] 20220413 [SECURITY] [DLA 2981-1] lrzip security update mailing-list, x_refsource_MLIST