Vulnerability in nasm
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as UBUNTU-CVE-2018-16517 has been found in nasm.
Risk of unauthorized operations or information disclosure.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "nasm UBUNTU-CVE-2018-16517" on the vendor's site.
UBUNTU-CVE-2018-16517 (nasm)
Attack vector: local / unauthenticated
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in nasm.
Check the vendor advisory for the affected versions of nasm.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'nasm' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1
Identify exposureidentify
grep -r 'nasm' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
nasmを grep し、稼働しているサービス・バージョンを把握する。 -
2
Post-deployment verificationverify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| Ubuntu:16.04:LTS | nasm |
All versions |
— |
| Ubuntu:18.04:LTS | nasm |
All versions |
— |
| Ubuntu:20.04:LTS | nasm |
All versions |
— |
| Ubuntu:Pro:22.04:LTS | nasm |
All versions |
— |
| Ubuntu:Pro:24.04:LTS | nasm |
All versions |
— |
| Ubuntu:25.10 | nasm |
All versions |
— |
| Ubuntu:26.04 | nasm |
All versions |
— |
| Ubuntu:26.04:LTS | nasm |
All versions |
— |
| Ubuntu:26.10 | nasm |
All versions |
— |
Original description The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- report ubuntu.com
- report cve.org