CVE-2023-29581

Name: CVE-2023-29581
Creator: NVD / NIST
Published: 2023-04-12T16:15:19.603+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.34%

Last modified Jun 17, 2026

CVE-2023-29581 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. yasm 1.3.0.55.g101bc has a segmentation violation in the function delete_Token at modules/preprocs/nasm/nasm-pp.c. NOTE: although a libyasm application could become unavailable if this were exploited, the vendor's position is that there is no security relevance because there is either supposed to be input validation before data reaches libyasm, or a sandbox in which the application runs.. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

Description

yasm 1.3.0.55.g101bc has a segmentation violation in the function delete_Token at modules/preprocs/nasm/nasm-pp.c. NOTE: although a libyasm application could become unavailable if this were exploited, the vendor's position is that there is no security relevance because there is either supposed to be input validation before data reaches libyasm, or a sandbox in which the application runs.

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

0.34%

25.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Yasm Project	Yasm	1.3.0.55.g101bc

References

https://bugzilla.redhat.com/show_bug.cgi?id=2186333
https://github.com/yasm/yasm/blob/master/SECURITY.md
https://github.com/yasm/yasm/issues/216Exploit, Issue Tracking, Third Party Advisory
https://github.com/z1r00/fuzz_vuln/blob/main/yasm/segv/delete_Token/readme.mdExploit, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2186333
https://github.com/yasm/yasm/blob/master/SECURITY.md
https://github.com/yasm/yasm/issues/216Exploit, Issue Tracking, Third Party Advisory
https://github.com/z1r00/fuzz_vuln/blob/main/yasm/segv/delete_Token/readme.mdExploit, Third Party Advisory

Timeline

Published: Apr 12, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-29581?

How severe is CVE-2023-29581?

CVE-2023-29581 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.

How do I fix CVE-2023-29581?

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-2023-29581?

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

Scan your code now

Source: NVD / NIST