CVE-2018-16517 — asm/labels

asm/labels.c in Netwide Assembler (NASM) is prone to NULL Pointer Dereference, which allows the attacker to cause a denial of service via a crafted file.

01What is this vulnerability?

asm/labels.c in Netwide Assembler (NASM) is prone to NULL Pointer Dereference, which allows the attacker to cause a denial of service via a crafted file.

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: 2018-09-06T23:00:00.000Z
• Last modified: 2024-08-05T10:24:32.767Z

09References

• bugzilla.nasm.us — https://bugzilla.nasm.us/show_bug.cgi?id=3392513
• fakhrizulkifli.github.io — https://fakhrizulkifli.github.io/CVE-2018-16517.html
• www.exploit-db.com — https://www.exploit-db.com/exploits/46726/
• packetstormsecurity.com — http://packetstormsecurity.com/files/152566/Netwide-Assembler-NASM-2.14rc15-Null…
• 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