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Fencer Vulns
medium 5.0

CVE-2008-5012 json

Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 do not properly change the source URI…

published 2008-11-13 17 y ago modified 2026-06-16 4 mo ago also EUVD-2008-4991

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.0%
EPSS 2.0% chance of exploitation in 30 days, percentile 81%
public exploits
0
none known

Summary

Mozilla Firefox 2.x before 2.0.0.18, Thunderbird 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 do not properly change the source URI when processing a canvas element and an HTTP redirect, which allows remote attackers to bypass the same origin policy and access arbitrary images that are not directly accessible to the attacker. NOTE: this issue can be leveraged to enumerate software on the client by performing redirections related to moz-icon.

Patch / fix

  • seamonkey RHEL 2.1 1.0.9-0.21.el2
  • seamonkey RHEL 3 1.0.9-0.25.el3
  • seamonkey RHEL 4 1.0.9-28.el4
  • seamonkey-nss RHEL 2.1 1.0.9-0.21.el2
  • seamonkey-nss RHEL 3 1.0.9-0.25.el3
  • seamonkey-chat RHEL 2.1 1.0.9-0.21.el2
  • seamonkey-chat RHEL 3 1.0.9-0.25.el3
  • seamonkey-chat RHEL 4 1.0.9-28.el4

red hat advisories RHSA-2008:0977RHSA-2008:0976

  • MozillaThunderbird openSUSE Tumbleweed 91.1.1-1.1

opensuse advisories openSUSE-SU-2024:10601-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2008-5012 updated

Mozilla Image stealing via canvas and HTTP redirect

  • Red Hat Desktop version 3 seamonkey 1.0.9-0.25.el3, seamonkey-nss 1.0.9-0.25.el3, seamonkey-chat 1.0.9-0.25.el3, seamonkey-mail 1.0.9-0.25.el3, seamonkey-nspr 1.0.9-0.25.el3, seamonkey-js-debugger 1.0.9-0.25.el3, +1 more Red Hat Enterprise Linux AS (Advanced Server) version 2.1 seamonkey 1.0.9-0.21.el2, seamonkey-nss 1.0.9-0.21.el2, seamonkey-chat 1.0.9-0.21.el2, seamonkey-mail 1.0.9-0.21.el2, seamonkey-nspr 1.0.9-0.21.el2, seamonkey-js-debugger 1.0.9-0.21.el2, +1 more Red Hat Enterprise Linux AS version 3 seamonkey 1.0.9-0.25.el3, seamonkey-nss 1.0.9-0.25.el3, seamonkey-chat 1.0.9-0.25.el3, seamonkey-mail 1.0.9-0.25.el3, seamonkey-nspr 1.0.9-0.25.el3, seamonkey-js-debugger 1.0.9-0.25.el3, +1 more Red Hat Enterprise Linux AS version 4 seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, thunderbird 1.5.0.12-17.el4, seamonkey-js-debugger 1.0.9-28.el4, seamonkey-dom-inspector 1.0.9-28.el4
    fixed: vendor fix RHSA-2008:0977
  • Red Hat Enterprise Linux Desktop (v. 5 client) thunderbird 2.0.0.18-1.el5
    fixed: vendor fix RHSA-2008:0976
  • Red Hat Enterprise Linux Desktop version 4 seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, thunderbird 1.5.0.12-17.el4, seamonkey-js-debugger 1.0.9-28.el4, seamonkey-dom-inspector 1.0.9-28.el4 Red Hat Enterprise Linux ES version 2.1 seamonkey 1.0.9-0.21.el2, seamonkey-nss 1.0.9-0.21.el2, seamonkey-chat 1.0.9-0.21.el2, seamonkey-mail 1.0.9-0.21.el2, seamonkey-nspr 1.0.9-0.21.el2, seamonkey-js-debugger 1.0.9-0.21.el2, +1 more Red Hat Enterprise Linux ES version 3 seamonkey 1.0.9-0.25.el3, seamonkey-nss 1.0.9-0.25.el3, seamonkey-chat 1.0.9-0.25.el3, seamonkey-mail 1.0.9-0.25.el3, seamonkey-nspr 1.0.9-0.25.el3, seamonkey-js-debugger 1.0.9-0.25.el3, +1 more Red Hat Enterprise Linux ES version 4 seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, thunderbird 1.5.0.12-17.el4, seamonkey-js-debugger 1.0.9-28.el4, seamonkey-dom-inspector 1.0.9-28.el4
    fixed: vendor fix RHSA-2008:0977
  • Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) thunderbird 2.0.0.18-1.el5
    fixed: vendor fix RHSA-2008:0976
  • Red Hat Enterprise Linux WS version 2.1 seamonkey 1.0.9-0.21.el2, seamonkey-nss 1.0.9-0.21.el2, seamonkey-chat 1.0.9-0.21.el2, seamonkey-mail 1.0.9-0.21.el2, seamonkey-nspr 1.0.9-0.21.el2, seamonkey-js-debugger 1.0.9-0.21.el2, +1 more Red Hat Enterprise Linux WS version 3 seamonkey 1.0.9-0.25.el3, seamonkey-nss 1.0.9-0.25.el3, seamonkey-chat 1.0.9-0.25.el3, seamonkey-mail 1.0.9-0.25.el3, seamonkey-nspr 1.0.9-0.25.el3, seamonkey-js-debugger 1.0.9-0.25.el3, +1 more Red Hat Enterprise Linux WS version 4 seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, thunderbird 1.5.0.12-17.el4, seamonkey-js-debugger 1.0.9-28.el4, seamonkey-dom-inspector 1.0.9-28.el4 Red Hat Linux Advanced Workstation 2.1 seamonkey 1.0.9-0.21.el2, seamonkey-nss 1.0.9-0.21.el2, seamonkey-chat 1.0.9-0.21.el2, seamonkey-mail 1.0.9-0.21.el2, seamonkey-nspr 1.0.9-0.21.el2, seamonkey-js-debugger 1.0.9-0.21.el2, +1 more
    fixed: vendor fix RHSA-2008:0977

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.03% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.