GHSA-6mq2-37j5-w6r6 · 深刻度: medium · エコシステム: rubygems — WEBrick Improper Input Validation vulnerability
WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel 376, and 1.9.2dev writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.
総合評価: CVE-2009-4492 は悪用リスクが高い(78.9/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 16.10%、97 パーセンタイル) 根拠: 公開エクスプロイトが 4 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 |
|---|---|---|---|---|
| 33489 | exploit_db | edb | 2010-01-11 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | 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 | 2026-06-17 | 15.97% | 16.10% | +0.13% |
| 2 | 2026-06-15 | 21.10% | 15.97% | -5.13% |
| 3 | 2026-06-04 | — | 21.10% | — |
EPSS の全履歴 (全 34 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 |
|---|---|---|---|---|---|---|
| 7.5 | 2.0 | HIGH |
|
10.0 | 6.4 | [email protected] |
GHSA-6mq2-37j5-w6r6 · 深刻度: medium · エコシステム: rubygems — WEBrick Improper Input Validation vulnerability
| vendor | priority | summary | link |
|---|---|---|---|
gentoo
|
normal | CVE-2009-4492: 1 GLSA(s) (201001-09), 1 atom(s) (dev-lang/ruby); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2009-4492 |
redhat
|
low | — | https://access.redhat.com/security/cve/CVE-2009-4492 |
ubuntu
|
negligible | CVE-2009-4492 negligible priority: Ubuntu including 3 source packages (ruby1.8, ruby1.9, ruby1.9.1), 30 status rows across 10 suites (dapper, hardy, intrepid, jaunty, karmic, lucid, maverick, natty, oneiric, upstream): ignored 8, not-affected 8, DNE 7, released 6, needs-triage 1. | https://ubuntu.com/security/CVE-2009-4492 |
Red Hat is aware of this issue and is tracking it via the following bug: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2009-4492 The Red Hat Security Response Team has rated this issue as having low security impact, a future update may address this flaw.
| URL | タグ |
|---|---|
| http://secunia.com/advisories/37949 | Not Applicable Vendor Advisory |
| http://securitytracker.com/id?1023429 | Broken Link Exploit Third Party Advisory VDB Entry |
| http://www.redhat.com/support/errata/RHSA-2011-0908.html | Third Party Advisory |
| http://www.redhat.com/support/errata/RHSA-2011-0909.html | Third Party Advisory |
| http://www.ruby-lang.org/en/news/2010/01/10/webrick-escape-sequence-injection | Patch Vendor Advisory |
| http://www.securityfocus.com/archive/1/508830/100/0/threaded | Broken Link Third Party Advisory VDB Entry |
| http://www.securityfocus.com/bid/37710 | Broken Link Exploit Third Party Advisory VDB Entry |
| http://www.ush.it/team/ush/hack_httpd_escape/adv.txt | Broken Link Exploit |
| http://www.vupen.com/english/advisories/2010/0089 | Permissions Required |