What is CVE-2023-31973?

CVE-2023-31973 is a medium-severity vulnerability in Tortall Yasm, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2023-05-09.

How severe is CVE-2023-31973?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Tortall Yasm

CVE-2023-31973

yasm v1.3.0 was discovered to contain a use after free via the function expand_mmac_params at /nasm/nasm-pp.c. Note: Multiple third parties dispute this as a bug and not a vulnerability according to the YASM security policy.

EPSS: 0.003 (23.1th 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

Tortall Yasm — versions 1.3.0
N/a — versions n/a

Weakness classification (CWE)

CWE-401 — Missing Release of Memory after Effective Lifetime
CWE-590

References

cve@mitre.org (Exploit, Issue Tracking)

Frequently asked questions

What is CVE-2023-31973?: CVE-2023-31973 is a medium-severity vulnerability in Tortall Yasm, classified under Missing Release of Memory after Effective Lifetime. CVSS score: 5.5/10. Published 2023-05-09.
How severe is CVE-2023-31973?: Medium severity. CVSS v3 base score is 5.5 out of 10.