Description
The Math.random function in the JavaScript implementation in Mozilla Firefox 3.5.x before 3.5.10 and 3.6.x before 3.6.4, and SeaMonkey before 2.0.5, uses a random number generator that is seeded only once per browser session, which makes it easier for remote attackers to track a user, or trick a user into acting upon a spoofed pop-up message, by calculating the seed value, related to a "temporary footprint" and an "in-session phishing attack."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 | devhelp +1 | 0.12-21.el5 | RHSA-2010:0501 |
| RHEL 5 | esc | 1.1.0-12.el5 | RHSA-2010:0501 |
| RHEL 5 | firefox | 3.6.4-8.el5 | RHSA-2010:0501 |
| RHEL 5 | gnome-python2-extras +4 | 2.14.2-7.el5 | RHSA-2010:0501 |
| RHEL 5 | totem +2 | 2.16.7-7.el5 | RHSA-2010:0501 |
| RHEL 5 | xulrunner +1 | 1.9.2.4-10.el5 | RHSA-2010:0501 |
| RHEL 5 | yelp | 2.16.0-26.el5 | RHSA-2010:0501 |
| RHEL 4 | firefox | 3.6.4-8.el4 | RHSA-2010:0500 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Advisories 4
- RHSA-2010:0501 Red Hat Security Advisory: firefox security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- RHSA-2010:0500 Red Hat Security Advisory: firefox security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 28, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- 40481 third-party-advisory
- USN-930-1 vendor-advisory
- oval:org.mitre.oval:def:11139 vdb-entry signature
- FEDORA-2010-10361 vendor-advisory
- ADV-2010-1640 vdb-entry
- RHSA-2010:0501 vendor-advisory
- ADV-2010-1557 vdb-entry
- http://www.infoworld.com/article/09/01/13/Browser_bug_could_allow_phishing_without_email_1.html
- MDVSA-2010:125 vendor-advisory
- ADV-2010-1773 vdb-entry
- http://www.darkreading.com/security/attacks/showArticle.jhtml?articleID=212900161
- http://arstechnica.com/news.ars/post/20090113-new-method-of-phishmongering-could-fool-experienced-users.html
- ADV-2010-1592 vdb-entry
- USN-930-2 vendor-advisory
- ADV-2010-1551 vdb-entry
- RHSA-2010:0500 vendor-advisory
- SUSE-SA:2010:030 vendor-advisory
- http://www.trusteer.com/files/In-session-phishing-advisory-2.pdf
- http://www.mozilla.org/security/announce/2010/mfsa2010-33.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=475585
- 40401 third-party-advisory
- FEDORA-2010-10344 vendor-advisory
- 33276 vdb-entry
- 40326 third-party-advisory
- http://support.avaya.com/css/P8/documents/100091069