The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.
総合評価: CVE-2019-11356 は高リスク(67/100)。CVSS 深刻度は重大。悪用される可能性が高い(EPSS 7.62%、94 パーセンタイル) 根拠: EPSS 上、短期間での悪用可能性は高い水準です。 推奨対応: 悪用可能性が高いため、影響範囲の確認と修補の優先付けを推奨します。
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。
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 | 2026-06-15 | 28.25% | 7.62% | -20.62% |
| 2 | 2026-03-19 | 28.61% | 28.25% | -0.36% |
| 3 | 2025-12-28 | — | 28.61% | — |
EPSS の全履歴 (全 24 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 |
|---|---|---|---|---|---|---|
| 9.8 | 3.1 | CRITICAL |
|
3.9 | 5.9 | [email protected] |
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2019-11356 not yet assigned priority: Debian including 1 source packages (cyrus-imapd), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2019-11356 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2019-11356 |
suse
|
high | CVE-2019-11356 severity important: SUSE including 16 source package names (cyradm-3.8.4-1.1, cyrus-imapd, …), 25 product×package rows across 10 product lines (SLES for SAP Applications 11 SP3, SUSE Liberty Linux 8, … (10 product lines)): Fixed 13, Known Not Affected 12. | https://www.suse.com/security/cve/CVE-2019-11356/ |
ubuntu
|
medium | CVE-2019-11356 medium priority: Ubuntu including 1 source packages (cyrus-imapd), 9 status rows across 9 suites (bionic, cosmic, disco, eoan, focal, groovy, trusty, upstream, xenial): released 5, DNE 2, ignored 2. | https://ubuntu.com/security/CVE-2019-11356 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| cyrus | imap | >= 2.5.0, <= 2.5.12 | cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:* |
| cyrus | imap | >= 3.0.0, <= 3.0.9 | cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:* |
| fedoraproject | fedora | 29 | cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* |
| fedoraproject | fedora | 30 | cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 18.04 | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.1 | cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_eus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_aus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.2 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* |
| redhat | enterprise_linux_server_tus | 8.4 | cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://access.redhat.com/errata/RHSA-2019:1771 | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/ | |
| https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ/ | |
| https://seclists.org/bugtraq/2019/Jun/9 | Mailing List Third Party Advisory |
| https://usn.ubuntu.com/4566-1/ | Third Party Advisory |
| https://www.cyrusimap.org/imap/download/release-notes/2.5/index.html | Release Notes Vendor Advisory |
| https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html | Release Notes Vendor Advisory |
| https://www.cyrusimap.org/imap/download/release-notes/3.0/index.html | Release Notes Vendor Advisory |
| https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html | Release Notes Vendor Advisory |
| https://www.debian.org/security/2019/dsa-4458 | Third Party Advisory |