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CVE-2016-3115
medium
CVSS 6.4
Vulnerability in c (CVE-2016-3115)
Summary
vulnerability in c (CVE-2016-3115). Risk of unauthorized operations or information disclosure.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2016-3115** has been found in c.
Risk of unauthorized operations or information disclosure. CVSS score: 6.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "c CVE-2016-3115" on the vendor's site.
CVE-2016-3115 (c) — CWE-93 / CVSS v3 6.4
Attack vector: remote (network-reachable) / 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-93) exists in c.
📍 Affected scope
c — .
🔥 Severity
Severity: Medium (CVSS 6.4/10). Risk of unauthorized operations or information disclosure
🔧 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 'c' .` 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 'c' . | 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 `c` を grep し、稼働しているサービス・バージョンを把握する。
-
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
- advisory https://bto.bluecoat.com/security-advisory/sa121
- advisory https://security.gentoo.org/glsa/201612-18
- advisory https://www.freebsd.org/security/advisories/FreeBSD-SA-16:14.openssh.asc
- advisory http://rhn.redhat.com/errata/RHSA-2016-0465.html
- advisory http://rhn.redhat.com/errata/RHSA-2016-0466.html
- advisory http://www.openssh.com/txt/x11fwd.adv
- advisory http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- web https://nvd.nist.gov/vuln/detail/CVE-2016-3115
- web https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-3115
- web https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html
- web http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/session.c
- web http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/session.c.diff?r1=1.281&r2=1.282&f=h
- web http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183101.html
- web http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183122.html
- web http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178838.html
- web http://lists.fedoraproject.org/pipermail/package-announce/2016-March/179924.html
- web http://lists.fedoraproject.org/pipermail/package-announce/2016-March/180491.html
- web http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184264.html
- web http://packetstormsecurity.com/files/136234/OpenSSH-7.2p1-xauth-Command-Injection-Bypass.html
- web http://seclists.org/fulldisclosure/2016/Mar/46
- web http://seclists.org/fulldisclosure/2016/Mar/47
- web http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- web http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- web http://www.securityfocus.com/bid/84314
- web http://www.securitytracker.com/id/1035249
- web https://www.exploit-db.com/exploits/39569
- web https://github.com/advisories/GHSA-p759-vw7c-cvg8
- web https://www.exploit-db.com/exploits/39569/