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.

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

EPSS: 0.007 (50.0th percentile) — read the EPSS interpretation.

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.

Affected products

Long_range_zip_project Long_range_zip — versions 0.631
Debian Debian_linux — versions 9.0
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (mailing-list, x_refsource_MLIST, 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.