CVE-2006-5633

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 7.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2006-10-31 · updated 2026-06-16

Description

Firefox 1.5.0.7 and 2.0, and Seamonkey 1.1b, allows remote attackers to cause a denial of service (crash) by creating a range object using createRange, calling selectNode on a DocType node (DOCUMENT_TYPE_NODE), then calling createContextualFragment on the range, which triggers a null dereference. NOTE: the original Bugtraq post mentioned that code execution was possible, but followup analysis has shown that it is only a null dereference.

Affected products

Mozilla Firefox: 1.5.0.7, 2.0
Mozilla Seamonkey: 1.1-beta

References

http://lists.grok.org.uk/pipermail/full-disclosure/2006-October/050416.html
http://www.gotfault.net/research/advisory/gadv-firefox.txt
http://www.securityfocus.com/archive/1/450155/100/0/threaded
http://www.securityfocus.com/archive/1/450167/100/0/threaded
http://www.securityfocus.com/archive/1/450168/100/0/threaded
http://www.securityfocus.com/archive/1/450682/100/200/threaded
http://www.securityfocus.com/archive/1/452803/100/0/threaded
http://www.securityfocus.com/bid/20799
https://bugzilla.mozilla.org/show_bug.cgi?id=358797
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=213237
https://exchange.xforce.ibmcloud.com/vulnerabilities/29916
http://lists.grok.org.uk/pipermail/full-disclosure/2006-October/050416.html

Get alerted when CVE-2006-5633 or the next vulnerability affects your stack