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Fencer Vulns
high 7.5

CVE-2008-5023 json

Firefox 3.x before 3.0.4, Firefox 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to bypass the protection mec…

published 2008-11-13 17 y ago modified 2026-06-16 4 mo ago also EUVD-2008-5002

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
3.3%
EPSS 3.3% chance of exploitation in 30 days, percentile 88%
public exploits
0
none known

Summary

Firefox 3.x before 3.0.4, Firefox 2.x before 2.0.0.18, and SeaMonkey 1.x before 1.1.13 allows remote attackers to bypass the protection mechanism for codebase principals and execute arbitrary script via the -moz-binding CSS property in a signed JAR file.

Patch / fix

  • mozilla firefox 2.0.0.18, 3.0.4
  • mozilla seamonkey 1.1.13
  • firefox RHEL 4 3.0.4-1.el4
  • firefox RHEL 5 3.0.4-1.el5
  • nss RHEL 4 3.12.1.1-3.el4
  • nss RHEL 5 3.12.1.1-3.el5
  • yelp RHEL 5 2.16.0-22.el5
  • devhelp RHEL 5 0.12-20.el5
  • nss-tools RHEL 5 3.12.1.1-3.el5
  • xulrunner RHEL 5 1.9.0.4-1.el5

red hat advisories RHSA-2008:0978RHSA-2008:0977

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-2008-5023 updated

Mozilla -moz-binding property bypasses security checks on codebase principals

  • 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
    fixed: vendor fix RHSA-2008:0977
  • Red Hat Enterprise Linux (v. 5 server) nss 3.12.1.1-3.el5, yelp 2.16.0-22.el5, devhelp 0.12-20.el5, firefox 3.0.4-1.el5, xulrunner 1.9.0.4-1.el5, nss-tools 3.12.1.1-3.el5, +1 more
    fixed: vendor fix RHSA-2008:0978
  • 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 nss 3.12.1.1-3.el4, firefox 3.0.4-1.el4, seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, seamonkey-js-debugger 1.0.9-28.el4, +1 more
    fixed: vendor fix RHSA-2008:0977
  • Red Hat Enterprise Linux Desktop (v. 5 client) nss 3.12.1.1-3.el5, yelp 2.16.0-22.el5, devhelp 0.12-20.el5, firefox 3.0.4-1.el5, xulrunner 1.9.0.4-1.el5, nss-tools 3.12.1.1-3.el5, +1 more
    fixed: vendor fix RHSA-2008:0978
  • Red Hat Enterprise Linux Desktop version 4 nss 3.12.1.1-3.el4, firefox 3.0.4-1.el4, seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, seamonkey-js-debugger 1.0.9-28.el4, +1 more
    fixed: vendor fix RHSA-2008:0977
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) nss 3.12.1.1-3.el5, devhelp 0.12-20.el5, xulrunner 1.9.0.4-1.el5, nss-tools 3.12.1.1-3.el5, xulrunner-devel-unstable 1.9.0.4-1.el5
    fixed: vendor fix RHSA-2008:0978
  • 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 nss 3.12.1.1-3.el4, firefox 3.0.4-1.el4, seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, seamonkey-js-debugger 1.0.9-28.el4, +1 more 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 nss 3.12.1.1-3.el4, firefox 3.0.4-1.el4, seamonkey 1.0.9-28.el4, seamonkey-chat 1.0.9-28.el4, seamonkey-mail 1.0.9-28.el4, seamonkey-js-debugger 1.0.9-28.el4, +1 more
    +1 more products
    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

3.26% chance of exploitation in the next 30 days, higher than 88% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

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.