Vulnerability in openssl
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 DEBIAN-CVE-2019-1547 has been found in openssl.
Confidential information can be exposed externally.
What to do: upgrade openssl to 1.1.1d-1 or later.
If unsure, ask your IT team or search "openssl DEBIAN-CVE-2019-1547" on the vendor's site.
DEBIAN-CVE-2019-1547 (openssl)
Attack vector: local / no user interaction
Affected: 1.1.1 - 1.1.1c
Patched: 1.1.1d-1 — apply immediately
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 (unclassified) exists in openssl.
Affected versions of openssl: 1.1.1 - 1.1.1c.
Severity: ?. Confidential information can be exposed externally.
Update to 1.1.1d-1. (If a vulnerable version 1.1.1 - 1.1.1c is in production, plan an immediate maintenance window.)
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 'openssl' . 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
-
1
Identify exposureidentify
grep -r 'openssl' . | 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
opensslを grep し、稼働しているサービス・バージョンを把握する。 -
2
Match against affected rangeverify
Confirm if version satisfies `1.1.1 - 1.1.1c`Step 1 で見つかったバージョンが影響範囲
1.1.1 - 1.1.1c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
Apply patchpatch
Upgrade openssl to 1.1.1d-1ステージング環境で 1.1.1d-1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
4
Post-deployment verificationverify
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
| Ecosystem | Package | Affected | Fixed |
|---|---|---|---|
| Debian:12 | openssl |
< 1.1.1d-1 |
1.1.1d-1 |
| Debian:13 | openssl |
< 1.1.1d-1 |
1.1.1d-1 |
| Debian:14 | openssl |
< 1.1.1d-1 |
1.1.1d-1 |
Original description The description as published by the source.
Normally in OpenSSL EC groups always have a co-factor present and this is used in side channel resistant code paths. However, in some cases, it is possible to construct a group using explicit parameters (instead of using a named curve). In those cases it is possible that such a group does not have the cofactor present. This can occur even where all the parameters match a known named curve. If such a curve is used then OpenSSL falls back to non-side channel resistant code paths which may result in full key recovery during an ECDSA signature operation. In order to be vulnerable an attacker would have to have the ability to time the creation of a large number of signatures where explicit parameters with no co-factor present are in use by an application using libcrypto. For the avoidance of doubt libssl is not vulnerable because explicit parameters are never used. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).
Source: OSV.dev (Open Source Vulnerabilities) OSV
References
- advisory security-tracker.debian.org