Out-of-bounds Read in Nasm Netwide_assembler

CVE-2019-20352

In Netwide Assembler (NASM) 2.15rc0, a heap-based buffer over-read occurs (via a crafted .asm file) in set_text_free when called from expand_one_smacro in asm/preproc.c.

Vulnerability class: Buffer Overflow

EPSS: 0.008 (53.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, x_refsource_MISC, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2019-20352?
CVE-2019-20352 is a high-severity vulnerability in Nasm Netwide_assembler, classified under Out-of-bounds Read. CVSS score: 7.1/10. Published 2020-01-06.
How severe is CVE-2019-20352?
High severity. CVSS v3 base score is 7.1 out of 10.
Is CVE-2019-20352 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.