HOME VULNERABILITIESCVE-2007-4771

CRITICAL

CVE-2007-4771

CWE-399Published: January 29, 2008· Updated: Jun 16, 2026

9.3

CVSS v3.1

Official Description

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.

Technical Analysis

CVE-2007-4771 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityM

Privileges Req.

User Interaction

Scope

Impact

ConfidentialityC

IntegrityC

AvailabilityC

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected Vendors & Products

icu-project1 product(s)

international components for unicode

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttp://www.securityfocus.com/bid/27455

PATCHhttp://www.securityfocus.com/bid/27455

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html

ADVISORYhttp://rhn.redhat.com/errata/RHSA-2008-0090.html

ADVISORYhttp://security.gentoo.org/glsa/glsa-200803-20.xml

ADVISORYhttp://security.gentoo.org/glsa/glsa-200805-16.xml

ADVISORYhttp://securitytracker.com/id?1019269

ADVISORYhttp://sourceforge.net/mailarchive/message.php?msg_name=d03a2ffb0801221538x68825e42xb4a4aaf0fcccecbd%40mail.gmail.com

ADVISORYhttp://wiki.rpath.com/wiki/Advisories:rPSA-2008-0043

ADVISORYhttp://www.debian.org/security/2008/dsa-1511

ADVISORYhttp://www.novell.com/linux/security/advisories/2008_23_openoffice.html

ADVISORYhttp://www.openoffice.org/security/cves/CVE-2007-4770.html

ADVISORYhttp://www.openoffice.org/security/cves/CVE-2007-5745.html

ADVISORYhttp://www.ubuntu.com/usn/usn-591-1

ADVISORYhttp://www.vupen.com/english/advisories/2008/0282

ADVISORYhttp://www.vupen.com/english/advisories/2008/0807/references

ADVISORYhttp://www.vupen.com/english/advisories/2008/1375/references

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=429025

ADVISORYhttps://exchange.xforce.ibmcloud.com/vulnerabilities/39936

ADVISORYhttps://issues.rpath.com/browse/RPL-2199

ADVISORYhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10507

ADVISORYhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5431

ADVISORYhttps://www.redhat.com/archives/fedora-package-announce/2008-January/msg00896.html

ADVISORYhttps://www.redhat.com/archives/fedora-package-announce/2008-January/msg00921.html

ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html

ADVISORYhttp://rhn.redhat.com/errata/RHSA-2008-0090.html

ADVISORYhttp://security.gentoo.org/glsa/glsa-200803-20.xml

ADVISORYhttp://security.gentoo.org/glsa/glsa-200805-16.xml

ADVISORYhttp://securitytracker.com/id?1019269

ADVISORYhttp://sourceforge.net/mailarchive/message.php?msg_name=d03a2ffb0801221538x68825e42xb4a4aaf0fcccecbd%40mail.gmail.com

ADVISORYhttp://wiki.rpath.com/wiki/Advisories:rPSA-2008-0043

ADVISORYhttp://www.debian.org/security/2008/dsa-1511

ADVISORYhttp://www.novell.com/linux/security/advisories/2008_23_openoffice.html

ADVISORYhttp://www.openoffice.org/security/cves/CVE-2007-4770.html

ADVISORYhttp://www.openoffice.org/security/cves/CVE-2007-5745.html

ADVISORYhttp://www.ubuntu.com/usn/usn-591-1

ADVISORYhttp://www.vupen.com/english/advisories/2008/0282

ADVISORYhttp://www.vupen.com/english/advisories/2008/0807/references

ADVISORYhttp://www.vupen.com/english/advisories/2008/1375/references

ADVISORYhttps://bugzilla.redhat.com/show_bug.cgi?id=429025

ADVISORYhttps://exchange.xforce.ibmcloud.com/vulnerabilities/39936

ADVISORYhttps://issues.rpath.com/browse/RPL-2199

ADVISORYhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10507

ADVISORYhttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5431

ADVISORYhttps://www.redhat.com/archives/fedora-package-announce/2008-January/msg00896.html

ADVISORYhttps://www.redhat.com/archives/fedora-package-announce/2008-January/msg00921.html

All References (80)

→

http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.htmlThird Party Advisory

→

http://rhn.redhat.com/errata/RHSA-2008-0090.htmlThird Party Advisory

→

http://secunia.com/advisories/28575Permissions Required

→

http://secunia.com/advisories/28615Permissions Required

→

http://secunia.com/advisories/28669Permissions Required

→

http://secunia.com/advisories/28783Permissions Required

→

http://secunia.com/advisories/29194Permissions Required

→

http://secunia.com/advisories/29242Permissions Required

→

http://secunia.com/advisories/29291Permissions Required

→

http://secunia.com/advisories/29294Permissions Required

→

http://secunia.com/advisories/29333Permissions Required

→

http://secunia.com/advisories/29852Permissions Required

→

http://secunia.com/advisories/29910Permissions Required

→

http://secunia.com/advisories/29987Permissions Required

→

http://secunia.com/advisories/30179Permissions Required

Quick Facts

CVE IDCVE-2007-4771

CVSS Score9.3 / 10

SeverityCRITICAL

WeaknessCWE-399

CISA KEVNo

Affected1 vendor(s)

PublishedJan 29, 2008

Related CVEs (CWE-399)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2007-4771 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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