Buffer Overflow in Openvswitch (CVE-2016-10377)
Summary
Vulnerability in Openvswitch (CVE-2016-10377). Successful exploitation can lead to full system takeover. Exploitable via miniflow_extract.
Original description
The description as published by the source.
In Open vSwitch (OvS) 2.5.0, a malformed IP packet can cause the switch to read past the end of the packet buffer due to an unsigned integer underflow in lib/flow.c in the function miniflow_extract, permitting remote bypass of the access control list enforced by the switch.
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-2016-10377 has been found in Openvswitch.
Attackers can target a specific entry point like miniflow_extract over the network to misuse the product.
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 "Openvswitch CVE-2016-10377" on the vendor's site.
CVE-2016-10377 (Openvswitch) — CWE-119 / CVSS v3 8.8
Attack vector: adjacent-network / unauthenticated / no user interaction
Attack surface: miniflow_extract
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 (CWE-119) exists in Openvswitch. Attackers reach the vulnerable code path via miniflow_extract without authentication.
Check the vendor advisory for the affected versions of Openvswitch. Attack surface: miniflow_extract.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
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 'Openvswitch' . 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
-
1Identify exposure identify
grep -r 'Openvswitch' . | 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
Openvswitchを grep し、稼働しているサービス・バージョンを把握する。 -
2Post-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-2016-10377 openvswitch Fixed in: 2.6.1+git20161123-1
References
- patch mail.openvswitch.org