Out-of-Bounds Write in GnuTLS (CVE-2017-7869)
Summary
Out-of-bounds write in GnuTLS (CVE-2017-7869). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 3.5.10 or later.
Original description
The description as published by the source.
GnuTLS before 2017-02-20 has an out-of-bounds write caused by an integer overflow and heap-based buffer overflow related to the cdk_pkt_read function in opencdk/read-packet.c. This issue (which is a subset of the vendor's GNUTLS-SA-2017-3 report) is fixed in 3.5.10.
Source: NIST National Vulnerability Database NVD
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 CVE-2017-7869 has been found in GnuTLS.
Risk of unauthorized operations or information disclosure. CVSS score: 7.5/10.
What to do: upgrade GnuTLS to 3.5.10 or later.
If unsure, ask your IT team or search "GnuTLS CVE-2017-7869" on the vendor's site.
CVE-2017-7869 (GnuTLS) — CWE-787 / CVSS v3 7.5
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 3.5.10 — apply immediately
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.
Out-of-bounds write (CWE-787) exists in GnuTLS.
Check the vendor advisory for the affected versions of GnuTLS.
Severity: High (CVSS 7.5/10). Risk of unauthorized operations or information disclosure.
Update to 3.5.10.
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 'GnuTLS' . 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
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1Identify exposure identify
grep -r 'GnuTLS' . | 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
GnuTLSを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade GnuTLS to 3.5.10ステージング環境で 3.5.10 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-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。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2017-7869 gnutls28 Fixed in: 3.5.8-4
References
- advisory securityfocus.com
- advisory access.redhat.com
- advisory bugs.chromium.org
- patch gitlab.com
- patch gnutls.org