CVE-2007-4771

Heap-based buffer overflow in the doInterval function in regexcmp.cpp in libicu in International Components for Unicode (ICU) 3.8.1 and earlier allows context-dependent attackers to cause a denial of service (memory consumption) and possibly have unspecified other impact via a regular expression that writes a large amount of data to the backtracking stack. NOTE: some of these details are obtained from third party information.

公開： 2008-01-28 最終更新： 2026-06-16 Assigner： [email protected] ソース： [email protected]
NVD ステータス：Modified，CVE の状態： published
参照： NVD, CVE.org, EUVD, JVN

CVE-2007-4771 は高リスク（65/100）。CVSS 深刻度は重大。悪用される可能性が高い（EPSS 2.54%、83 パーセンタイル） 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。

CVE-2007-4771 の EPSS（Exploit Prediction Scoring System）スコア

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 3.75% 2.54% -1.21%
2 2026-06-08 2.33% 3.75% +1.42%
3 2025-03-30 — 2.33% —

EPSS の全履歴 （全 12 件）

CVE-2007-4771 の CVSS（Common Vulnerability Scoring System）指標

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
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C クリックして展開
アクセス経路 (AV:N)
ルーティング可能なネットワーク越しに、遠隔から到達・悪用しうる。
アクセスの複雑さ (AC:M)
多少の有利条件は要るが、極端なレアケースではない。
認証 (AU:N)
認証を経ずに攻撃を完結できる。
機密性への影響 (C:C)
機密性は全面的に損なわれる。
完全性への影響 (I:C)
完全性は全面的に損なわれる。
可用性への影響 (A:C)
可用性は全面的に損なわれる。
 8.6 10.0 [email protected]

CVE-2007-4771 の弱点分類（列挙）

CVE-2007-4771 の OS トラッカー

vendor priority summary link
debian not yet assigned CVE-2007-4771 not yet assigned priority: Debian including 1 source packages (icu), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2007-4771
gentoo normal CVE-2007-4771: 2 GLSA(s) (200803-20, 200805-16), 3 atom(s) (app-office/openoffice, app-office/openoffice-bin, dev-libs/icu); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2007-4771
redhat high — https://access.redhat.com/security/cve/CVE-2007-4771
suse critical CVE-2007-4771 severity critical: SUSE including 20 source package names (icu-4.0-7.26.15, icu-77.1-160000.2.2, …), 26 product×package rows across 6 product lines (SUSE Linux Enterprise Server 11 SP1, SUSE Linux Enterprise Server 11 SP2, … (6 product lines)): Fixed 26. https://www.suse.com/security/cve/CVE-2007-4771/
ubuntu low CVE-2007-4771 low priority: Ubuntu including 1 source packages (icu), 5 status rows across 5 suites (dapper, edgy, feisty, gutsy, upstream): released 4, needed 1. https://ubuntu.com/security/CVE-2007-4771

CVE-2007-4771 の影響を受けるソフトウェア／構成

ベンダー 製品 バージョン 生の CPE
icu-project international_components_for_unicode <= 3.8.1 cpe:2.3:a:icu-project:international_components_for_unicode:*:*:*:*:*:c\/c\+\+:*:*

CVE-2007-4771 の参考情報

URL タグ
http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2008-0090.html Third Party Advisory
http://secunia.com/advisories/28575 Permissions Required
http://secunia.com/advisories/28615 Permissions Required
http://secunia.com/advisories/28669 Permissions Required
http://secunia.com/advisories/28783 Permissions Required
http://secunia.com/advisories/29194 Permissions Required
http://secunia.com/advisories/29242 Permissions Required
http://secunia.com/advisories/29291 Permissions Required
http://secunia.com/advisories/29294 Permissions Required
http://secunia.com/advisories/29333 Permissions Required
http://secunia.com/advisories/29852 Permissions Required
http://secunia.com/advisories/29910 Permissions Required
http://secunia.com/advisories/29987 Permissions Required
http://secunia.com/advisories/30179 Permissions Required
http://security.gentoo.org/glsa/glsa-200803-20.xml Third Party Advisory
http://security.gentoo.org/glsa/glsa-200805-16.xml Third Party Advisory
http://securitytracker.com/id?1019269 Third Party Advisory VDB Entry
http://sourceforge.net/mailarchive/message.php?msg_name=d03a2ffb0801221538x68825e42xb4a4aaf0fcccecbd%40mail.gmail.com Third Party Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-231641-1 Broken Link
http://sunsolve.sun.com/search/document.do?assetkey=1-26-233922-1 Broken Link
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0043 Third Party Advisory
http://www.debian.org/security/2008/dsa-1511 Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2008:026 Broken Link
http://www.novell.com/linux/security/advisories/2008_23_openoffice.html Third Party Advisory
http://www.openoffice.org/security/cves/CVE-2007-4770.html Third Party Advisory
http://www.openoffice.org/security/cves/CVE-2007-5745.html Third Party Advisory
http://www.securityfocus.com/archive/1/487677/100/0/threaded
http://www.securityfocus.com/bid/27455 Patch Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/usn-591-1 Third Party Advisory
http://www.vupen.com/english/advisories/2008/0282 Third Party Advisory
http://www.vupen.com/english/advisories/2008/0807/references Third Party Advisory
http://www.vupen.com/english/advisories/2008/1375/references Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=429025 Issue Tracking Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/39936 Third Party Advisory VDB Entry
https://issues.rpath.com/browse/RPL-2199 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10507 Third Party Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5431 Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00896.html Third Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2008-January/msg00921.html Third Party Advisory
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