CVE-2018-19214 — Netwide Assembler (NASM) 2

Netwide Assembler (NASM) 2.14rc15 has a heap-based buffer over-read in expand_mmac_params in asm/preproc.c for insufficient input.

01What is this vulnerability?

Netwide Assembler (NASM) 2.14rc15 has a heap-based buffer over-read in expand_mmac_params in asm/preproc.c for insufficient input.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2018-11-12T19:00:00.000Z
• Last modified: 2024-08-05T11:30:04.255Z

09References

• repo.or.cz — https://repo.or.cz/nasm.git/commit/661f723d39e03ca6eb05d7376a43ca33db478354
• bugzilla.nasm.us — https://bugzilla.nasm.us/show_bug.cgi?id=3392521
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00017.html
• lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00015.html