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Vulnerability record · CVE-2008-3443 · published 14 August 2008

CVE-2008-3443: Ruby-lang ruby vulnerability

Ruby Lang · Ruby

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.

5.0 CVSS 2.0 Medium EPSS 16% · top 3.3% CWE-399 · CWE-399
5.0CVSS 2.0 base score
16%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
52References
16 Jun 2026Last modified by NVD

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
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
http://www.debian.org/security/2009/dsa-1695
http://www.redhat.com/support/errata/RHSA-2008-0895.html
http://www.redhat.com/support/errata/RHSA-2008-0897.html
http://www.securityfocus.com/bid/30682
http://www.securitytracker.com/id?1021075
http://www.us-cert.gov/cas/techalerts/TA09-133A.html US Government Resource
http://www.vupen.com/english/advisories/2009/1297
https://exchange.xforce.ibmcloud.com/vulnerabilities/44688
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9570
https://usn.ubuntu.com/651-1/
https://usn.ubuntu.com/691-1/
https://www.exploit-db.com/exploits/6239
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html
https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html
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
http://www.debian.org/security/2009/dsa-1695
http://www.redhat.com/support/errata/RHSA-2008-0895.html

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2008-3443), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.