Use After Free in Nasm Netwide_assembler

CVE-2019-8343

In Netwide Assembler (NASM) 2.14.02, there is a use-after-free in paste_tokens in asm/preproc.c.

Vulnerability class: Use-After-Free

EPSS: 0.011 (63.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-8343?
CVE-2019-8343 is a high-severity vulnerability in Nasm Netwide_assembler, classified under Use After Free. CVSS score: 7.8/10. Published 2019-02-15.
How severe is CVE-2019-8343?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2019-8343 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.