CVE-2010-0220

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-01-07 · updated 2026-06-16
Weakness: CWE-399

Description

The nsObserverList::FillObserverArray function in xpcom/ds/nsObserverList.cpp in Mozilla Firefox before 3.5.7 allows remote attackers to cause a denial of service (application crash) via a crafted web site that triggers memory consumption and an accompanying Low Memory alert dialog, and also triggers attempted removal of an observer from an empty observers array.

Affected products

Mozilla Firefox: through 3.5.6; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+65)

References

http://hg.mozilla.org/mozilla-central/rev/51396f6c9f20
http://isc.sans.org/diary.html?storyid=7897
http://www.mandriva.com/security/advisories?name=MDVSA-2010:000
http://www.mozilla.com/en-US/firefox/3.5.7/releasenotes/
https://bugzilla.mozilla.org/show_bug.cgi?id=507114
https://exchange.xforce.ibmcloud.com/vulnerabilities/55550
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8292
http://hg.mozilla.org/mozilla-central/rev/51396f6c9f20
http://isc.sans.org/diary.html?storyid=7897
http://www.mandriva.com/security/advisories?name=MDVSA-2010:000
http://www.mozilla.com/en-US/firefox/3.5.7/releasenotes/
https://bugzilla.mozilla.org/show_bug.cgi?id=507114

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