Use After Free in Long Range Zip Project
CVE-2021-27347
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (51.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Long Range Zip Project — versions 0.631
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/ckolivas/lrzip/issues/165 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2022/04/msg00012.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-27347?
- CVE-2021-27347 is a medium-severity vulnerability in Long Range Zip Project, classified under Use After Free. CVSS score: 5.5/10. Published 2021-06-10.
- How severe is CVE-2021-27347?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2021-27347 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.