Vulnerability in Microsec e-Szigno (CVE-2015-3931)
Summary
Vulnerability in Microsec e-Szigno (CVE-2015-3931). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
Microsec e-Szigno before 3.2.7.12 allows remote attackers to perform XML signature wrapping attacks via an e-akta signed document with a ds:Object node with a crafted payload prepended to a valid ds:Object.
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-2015-3931 has been found in Microsec e-Szigno.
Successful exploitation can lead to full system takeover. CVSS score: 7.8/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Microsec e-Szigno CVE-2015-3931" on the vendor's site.
CVE-2015-3931 (Microsec e-Szigno) — CWE-91 / CVSS v3 7.8
Attack vector: local / unauthenticated
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-91) exists in Microsec e-Szigno.
Check the vendor advisory for the affected versions of Microsec e-Szigno.
Severity: High (CVSS 7.8/10). 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. 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 Microsec e-Szigno 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 packetstormsecurity.com
- advisory neih.gov.hu
- advisory securityfocus.com
- advisory search-lab.hu
- advisory search-lab.hu
- patch e-szigno.hu