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CVE-2020-18171
high
CVSS 8.8
Privilege Escalation in techsmith (CVE-2020-18171)
Summary
vulnerability in techsmith (CVE-2020-18171). Successful exploitation can lead to full system takeover.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2020-18171** has been found in techsmith.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "techsmith CVE-2020-18171" on the vendor's site.
CVE-2020-18171 (techsmith) — CWE-269 / CVSS v3 8.8
Attack vector: local / no user interaction
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.
❓ What is the problem
**A vulnerability** (CWE-269) exists in techsmith.
📍 Affected scope
techsmith — .
🔥 Severity
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover
🔧 How to fix
Update to the patched release per vendor advisory.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'techsmith' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'techsmith' . | 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 `techsmith` を grep し、稼働しているサービス・バージョンを把握する。
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7Post-deployment verification verify
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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
References
- web https://docs.google.com/document/d/1W33rsdISmexLOGS4VmLUIITRU_KqGULcij1Z6QyxsjU/edit?usp=sharing
- web https://github.com/GitHubAssessments/CVE_Assessment_06_2019/blob/master/Snagit_Review.pdf
- web https://github.com/TechSmith/TSC-Security-Public/blob/main/advisories/2020/CVE-2020-18171-dispute.md
- web https://nvd.nist.gov/vuln/detail/CVE-2020-18171
- web https://github.com/advisories/GHSA-3rh8-vm3g-5r4x