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Fencer Vulns
high 7.5

CVE-2009-3374 json

The XPCVariant::VariantDataToJS function in the XPCOM implementation in Mozilla Firefox 3.0.x before 3.0.15 and 3.5.x before 3.5.4 does not…

published 2009-10-29 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3356

cvss
7.5
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 80%
public exploits
0
none known

Summary

The XPCVariant::VariantDataToJS function in the XPCOM implementation in Mozilla Firefox 3.0.x before 3.0.15 and 3.5.x before 3.5.4 does not enforce intended restrictions on interaction between chrome privileged code and objects obtained from remote web sites, which allows remote attackers to execute arbitrary JavaScript with chrome privileges via unspecified method calls, related to "doubly-wrapped objects."

Patch / fix

  • firefox RHEL 4 3.0.15-3.el4
  • firefox RHEL 5 3.0.15-3.el5_4
  • nspr RHEL 4 4.7.6-1.el4_8
  • nspr RHEL 5 4.7.6-1.el5_4
  • xulrunner RHEL 5 1.9.0.15-3.el5_4
  • xulrunner-devel-unstable RHEL 5 1.9.0.15-3.el5_4

red hat advisories RHSA-2009:1530

  • firefox-esr openSUSE Tumbleweed 128.5.1-1.1
  • MozillaFirefox openSUSE Tumbleweed 50.1.0-1.1

opensuse advisories openSUSE-SU-2024:14572-1openSUSE-SU-2024:10071-1

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-2009-3374 updated cvss 6.8

XPCVariant:: VariantDataToJS()

  • Red Hat Enterprise Linux (v. 5 server) nspr 4.7.6-1.el5_4, firefox 3.0.15-3.el5_4, xulrunner 1.9.0.15-3.el5_4, xulrunner-devel-unstable 1.9.0.15-3.el5_4 Red Hat Enterprise Linux AS version 4 nspr 4.7.6-1.el4_8, firefox 3.0.15-3.el4 Red Hat Enterprise Linux Desktop (v. 5 client) nspr 4.7.6-1.el5_4, firefox 3.0.15-3.el5_4, xulrunner 1.9.0.15-3.el5_4, xulrunner-devel-unstable 1.9.0.15-3.el5_4 Red Hat Enterprise Linux Desktop version 4 nspr 4.7.6-1.el4_8, firefox 3.0.15-3.el4 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) nspr 4.7.6-1.el5_4, xulrunner 1.9.0.15-3.el5_4, xulrunner-devel-unstable 1.9.0.15-3.el5_4 Red Hat Enterprise Linux ES version 4 nspr 4.7.6-1.el4_8, firefox 3.0.15-3.el4
    +1 more products
    Red Hat Enterprise Linux WS version 4 nspr 4.7.6-1.el4_8, firefox 3.0.15-3.el4
    fixed: vendor fix RHSA-2009:1530

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

1.98% chance of exploitation in the next 30 days, higher than 80% 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-264 Permissions, Privileges, and Access Controls

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.