CVE-2008-3443

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 15.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2008-08-14 · updated 2026-06-16
Weakness: CWE-399

Description

The regular expression engine (regex.c) in Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 allows remote attackers to cause a denial of service (infinite loop and crash) via multiple long requests to a Ruby socket, related to memory allocation failure, and as demonstrated against Webrick.

Affected products

Ruby: 1.6.8, 1.8.0, 1.8.1, 1.8.1--9, 1.8.2, 1.8.2-preview2 (+45)

References

http://lists.apple.com/archives/security-announce/2009/May/msg00002.html
http://secunia.com/advisories/31430
http://secunia.com/advisories/32165
http://secunia.com/advisories/32219
http://secunia.com/advisories/32371
http://secunia.com/advisories/32372
http://secunia.com/advisories/33185
http://secunia.com/advisories/33398
http://secunia.com/advisories/35074
http://securityreason.com/securityalert/4158
http://support.apple.com/kb/HT3549
http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm

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