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Fencer Vulns
critical 10.0

CVE-2009-3382 in the critical feed json

layout/base/nsCSSFrameConstructor.cpp in the browser engine in Mozilla Firefox 3.0.x before 3.0.15 does not properly handle first-letter fr…

published 2009-10-29 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-3364

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.8%
EPSS 10.8% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

layout/base/nsCSSFrameConstructor.cpp in the browser engine in Mozilla Firefox 3.0.x before 3.0.15 does not properly handle first-letter frames, which allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

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

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-2009-3382 updated cvss 6.8

Firefox crashes with evidence of memory corruption

  • 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

Timeline

  1. First public exploit (EDB-33314)
  2. Published

Exploit prediction

10.84% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-33314 Mozilla Firefox 3.0.14 - Remote Memory Corruption dos, 2009-10-27

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

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.