GHSA-x3jr-pf6g-c48f · 深刻度: medium · エコシステム: go — Golang/x/crypto message forgery vulnerability
A message-forgery issue was discovered in crypto/openpgp/clearsign/clearsign.go in supplementary Go cryptography libraries 2019-03-25. According to the OpenPGP Message Format specification in RFC 4880 chapter 7, a cleartext signed message can contain one or more optional "Hash" Armor Headers. The "Hash" Armor Header specifies the message digest algorithm(s) used for the signature. However, the Go clearsign package ignores the value of this header, which allows an attacker to spoof it. Consequently, an attacker can lead a victim to believe the signature was generated using a different message digest algorithm than what was actually used. Moreover, since the library skips Armor Header parsing in general, an attacker can not only embed arbitrary Armor Headers, but also prepend arbitrary text to cleartext messages without invalidating the signatures.
総合評価: CVE-2019-11841 は悪用リスクが高い(66.3/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 2.00%、78 パーセンタイル) 根拠: 公開エクスプロイトが 2 件参照されています(Exploit-DB)。 推奨対応: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-24 | 1.64% | 2.00% | +0.36% |
| 2 | 2026-06-15 | 0.40% | 1.64% | +1.24% |
| 3 | 2026-03-07 | — | 0.40% | — |
EPSS の全履歴 (全 19 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 5.9 | 3.1 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
GHSA-x3jr-pf6g-c48f · 深刻度: medium · エコシステム: go — Golang/x/crypto message forgery vulnerability
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-11841 not yet assigned priority: Debian including 1 source packages (golang-go.crypto), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-11841 |
ubuntu
|
medium | CVE-2019-11841 medium priority: Ubuntu including 2 source packages (golang-go.crypto, snapd), 38 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 30, ignored 3, DNE 2, needed 2, needs-triage 1. | https://ubuntu.com/security/CVE-2019-11841 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| golang | crypto | 2019-03-25 | cpe:2.3:a:golang:crypto:2019-03-25:*:*:*:*:*:*:* |
| debian | debian_linux | 8.0 | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://packetstormsecurity.com/files/152840/Go-Cryptography-Libraries-Cleartext-Message-Spoofing.html | Exploit Third Party Advisory VDB Entry |
| https://go.googlesource.com/crypto/ | Product Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2019/09/msg00011.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html | Mailing List Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html | |
| https://sec-consult.com/ | Third Party Advisory |
| https://sec-consult.com/en/blog/advisories/cleartext-message-spoofing-in-go-cryptography-libraries-cve-2019-11841/ | Exploit Third Party Advisory |