CVE-2007-4771

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-01-29 · updated 2026-06-16
Weakness: CWE-399

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.

Affected products

Icu-Project International Components For Unicode: through 3.8.1

References

http://lists.opensuse.org/opensuse-security-announce/2008-03/msg00001.html
http://rhn.redhat.com/errata/RHSA-2008-0090.html
http://secunia.com/advisories/28575
http://secunia.com/advisories/28615
http://secunia.com/advisories/28669
http://secunia.com/advisories/28783
http://secunia.com/advisories/29194
http://secunia.com/advisories/29242
http://secunia.com/advisories/29291
http://secunia.com/advisories/29294
http://secunia.com/advisories/29333
http://secunia.com/advisories/29852

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