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CVE-2021-3450 high CVSS 7.4

Vulnerability in Openssl Weblogic Server (CVE-2021-3450)

Summary

Vulnerability in Openssl Weblogic Server (CVE-2021-3450). Confidential information can be exposed externally.

Original description

The description as published by the source.

The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in Open…

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

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-2021-3450 has been found in Openssl Weblogic Server.
Confidential information can be exposed externally. CVSS score: 7.4/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Openssl Weblogic Server CVE-2021-3450" on the vendor's site.

CVE-2021-3450 (Openssl Weblogic Server) — CWE-295 / CVSS v3 7.4
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Affected: 1.1.1h - 1.1.1j
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-295) exists in Openssl Weblogic Server.

📍 Affected scope

Affected versions of Openssl Weblogic Server: 1.1.1h - 1.1.1j.

🔥 Severity

Severity: High (CVSS 7.4/10). Confidential information can be exposed externally.

🔧 How to fix

Update to the patched release per vendor advisory. (If a vulnerable version 1.1.1h - 1.1.1j is in production, plan an immediate maintenance window.)

🛡️ 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. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    Audit SBOM/dependencies for affected components.

    資産台帳・SBOM・依存マニフェストで Openssl Weblogic Server を使っているサービスとバージョンを洗い出す。

  2. 2
    Match against affected range verify 
    Confirm if version satisfies `1.1.1h - 1.1.1j`

    Step 1 で見つかったバージョンが影響範囲 1.1.1h - 1.1.1j に該当するか照合。本番で稼働中ならインシデント扱い。

  3. 3
    Post-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。

Affected packages

Bitnami node
[{"type":"SEMVER","events":[{"introduced":"10.0.0"},{"fixed":"10.24.1"},{"introduced":"12.0.0"},{"fixed":"12.22.1"},{"introduced":"14.0.0"},{"fixed":"14.16.1"},{"introduced":"15.0.0"},{"fixed":"15.14.0"}]}]
Bitnami node-min
[{"type":"SEMVER","events":[{"introduced":"10.0.0"},{"fixed":"10.24.1"},{"introduced":"12.0.0"},{"fixed":"12.22.1"},{"introduced":"14.0.0"},{"fixed":"14.16.1"},{"introduced":"15.0.0"},{"fixed":"15.14.0"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

References

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