GHSA-3qx2-6f78-w2j2 · 深刻度: medium · エコシステム: composer — Denial of service caused by infinite recursion when parsing SVG images
Dompdf is an HTML to PDF converter for PHP. When parsing SVG images Dompdf performs an initial validation to ensure that paths within the SVG are allowed. One of the validations is that the SVG document does not reference itself. However, prior to version 2.0.4, a recursive chained using two or more SVG documents is not correctly validated. Depending on the system configuration and attack pattern this could exhaust the memory available to the executing process and/or to the server itself. php-svg-lib, when run in isolation, does not support SVG references for `image` elements. However, when used in combination with Dompdf, php-svg-lib will process SVG images referenced by an `image` element. Dompdf currently includes validation to prevent self-referential `image` references, but a chained reference is not checked. A malicious actor may thus trigger infinite recursion by chaining references between two or more SVG images. When Dompdf parses a malicious payload, it will crash due after exceeding the allowed execution time or memory usage. An attacker sending multiple request to a system can potentially cause resource exhaustion to the point that the system is unable to handle incoming request. Version 2.0.4 contains a fix for this issue.
総合評価: CVE-2023-50262 は公開エクスプロイトあり(56.1/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 1.46%、70 パーセンタイル) 根拠: 公開エクスプロイトが 1 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 ↗ |
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 | 6.15% | 1.46% | -4.68% |
| 2 | 2025-12-31 | 4.78% | 6.15% | +1.36% |
| 3 | 2025-11-21 | — | 4.78% | — |
EPSS の全履歴 (全 15 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 |
|---|---|---|---|---|---|---|
| 5.3 | 3.1 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-3qx2-6f78-w2j2 · 深刻度: medium · エコシステム: composer — Denial of service caused by infinite recursion when parsing SVG images
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2023-50262 unimportant priority: Debian including 1 source packages (php-dompdf), 3 status rows across 3 suites (bookworm, bullseye, sid): resolved 3. | https://security-tracker.debian.org/tracker/CVE-2023-50262 |
ubuntu
|
medium | CVE-2023-50262 medium priority: Ubuntu including 1 source packages (php-dompdf), 8 status rows across 8 suites (bionic, focal, jammy, lunar, mantic, trusty, upstream, xenial): not-affected 4, DNE 2, ignored 1, needs-triage 1. | https://ubuntu.com/security/CVE-2023-50262 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| dompdf_project | dompdf | <= 2.0.3 | cpe:2.3:a:dompdf_project:dompdf:*:*:*:*:*:*:*:* |