CVE-2017-8843

Name: CVE-2017-8843
Creator: NVD / NIST
Published: 2017-05-08T14:29:00.2+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 1.38%

Last modified Jun 17, 2026

CVE-2017-8843 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. The join_pthread function in stream.c in liblrzip.so in lrzip 0.631 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted archive.. EPSS estimates a 1.38% chance of exploitation in the next 30 days.

Description

The join_pthread function in stream.c in liblrzip.so in lrzip 0.631 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted archive.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

1.38%

68.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Long Range Zip Project	Long Range Zip	0.631

References

https://blogs.gentoo.org/ago/2017/05/07/lrzip-null-pointer-dereference-in-join_pthread-stream-c/Third Party Advisory, VDB Entry
https://github.com/ckolivas/lrzip/issues/69Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202005-01Third Party Advisory
https://blogs.gentoo.org/ago/2017/05/07/lrzip-null-pointer-dereference-in-join_pthread-stream-c/Third Party Advisory, VDB Entry
https://github.com/ckolivas/lrzip/issues/69Issue Tracking, Patch, Third Party Advisory
https://security.gentoo.org/glsa/202005-01Third Party Advisory

Timeline

Published: May 8, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-8843?

The join_pthread function in stream.c in liblrzip.so in lrzip 0.631 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted archive.

How severe is CVE-2017-8843?

CVE-2017-8843 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 1.38% probability of exploitation in the next 30 days.

How do I fix CVE-2017-8843?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-8843?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST