Information Disclosure in Cisco IOS (CVE-2017-3805)
Summary
Vulnerability in Cisco IOS (CVE-2017-3805). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
A vulnerability in the web-based management interface of Cisco IOS and Cisco IOx Software could allow an unauthenticated, remote attacker to view confidential information that is displayed without authenticating to the device. Affected Products: This vulnerability affects Cisco IOS Software and Cisco IOx Software running on IR829, IR809, IE4K, and CGR1K platforms. More Information: CSCvb20897. Known Affected Releases: 1.0(0).
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-2017-3805 has been found in Cisco IOS.
Risk of unauthorized operations or information disclosure. CVSS score: 5.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Cisco IOS CVE-2017-3805" on the vendor's site.
CVE-2017-3805 (Cisco IOS) — CWE-200 / CVSS v3 5.3
Attack vector: remote (network-reachable) / unauthenticated / 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.
Information disclosure (CWE-200) exists in Cisco IOS.
Check the vendor advisory for the affected versions of Cisco IOS.
Severity: Medium (CVSS 5.3/10). 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. Audit SBOM/dependencies 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
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Cisco IOS を使っているサービスとバージョンを洗い出す。
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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。
References
- advisory securityfocus.com
- patch tools.cisco.com
- web securitytracker.com