CVE-2011-2378
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12,...
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x, and possibly other products does not properly handle DOM objects, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to dereferencing of a "dangling pointer."
Exploit likelihood
What each source reports
NVD Score used
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x, and possibly other products does not properly handle DOM objects, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to dereferencing of a "dangling pointer."
- Record
CVE-2011-2378- CVSS 2.0
- 10.0 High
AV:N/AC:L/Au:N/C:C/I:C/A:C - Weakness
- CWE-94
- Updated
- 2026-11-02
CVE List No score
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x, and possibly other products does not properly handle DOM objects, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to dereferencing of a "dangling pointer."
- Record
CVE-2011-2378- Updated
- 2026-11-02
EUVDEUVD-2011-2367 No score
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x, and possibly other products does not properly handle DOM objects, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to dereferencing of a "dangling pointer."
- Record
EUVD-2011-2367- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q8vw-h86h-vfj9 No score
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12,...
The appendChild function in Mozilla Firefox before 3.6.20, Thunderbird 3.x before 3.1.12, SeaMonkey 2.x, and possibly other products does not properly handle DOM objects, which allows remote attackers to execute arbitrary code via unspecified vectors that lead to dereferencing of a "dangling pointer."
- Record
GHSA-q8vw-h86h-vfj9- Weakness
- CWE-94
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
iceapeDebian:6.0 From an advisory covering 6 CVEs |
before 2.0.11-7, plus listed versions 2.0.11-22.0.11-32.0.11-42.0.11-52.0.11-6 |
2.0.11-7 |
iceweaselDebian:6.0 From an advisory covering 6 CVEs |
before 3.5.16-9, plus listed versions 3.5.16-43.5.16-53.5.16-5~bpo50+13.5.16-63.5.16-6~bpo50+1 Show 4 moreShow less3.5.16-73.5.16-7~bpo50+13.5.16-83.5.16-8~bpo50+1 |
3.5.16-9 |
xulrunnerDebian:5.0 From an advisory covering 6 CVEs |
before 1.9.0.19-13, plus listed versions 1.9.0.10-11.9.0.11-0lenny11.9.0.11-11.9.0.12-0lenny11.9.0.12-1 Show 26 moreShow less1.9.0.13-0lenny11.9.0.13-11.9.0.14-0lenny11.9.0.14-11.9.0.15-0lenny11.9.0.16-11.9.0.18-11.9.0.19-11.9.0.19-111.9.0.19-121.9.0.19-21.9.0.19-31.9.0.19-41.9.0.19-51.9.0.19-61.9.0.19-71.9.0.19-81.9.0.19-91.9.0.5-11.9.0.6-11.9.0.7-0lenny11.9.0.7-0lenny21.9.0.7-11.9.0.8-11.9.0.9-0lenny21.9.0.9-1 |
1.9.0.19-13 |
icedoveDebian:6.0 From an advisory covering 6 CVEs |
before 3.0.11-1+squeeze4, plus listed versions 3.0.11-13.0.11-1+squeeze13.0.11-1+squeeze23.0.11-1+squeeze3 |
3.0.11-1+squeeze4 |
firefoxRed Hat:enterprise_linux:4::as From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::as From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
firefoxRed Hat:enterprise_linux:4::desktop From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::desktop From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
firefoxRed Hat:enterprise_linux:4::es From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::es From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
Show 21 moreShow less
| Package | Affected | Fixed |
|---|---|---|
firefoxRed Hat:enterprise_linux:4::ws From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
firefox-debuginfoRed Hat:enterprise_linux:4::ws From an advisory covering 6 CVEs |
before 0:3.6.20-2.el4 | 0:3.6.20-2.el4 |
xulrunnerRed Hat:enterprise_linux:5::client_workstation From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::client_workstation From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
xulrunner-develRed Hat:enterprise_linux:5::client_workstation From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
firefoxRed Hat:enterprise_linux:5::client From an advisory covering 6 CVEs |
before 0:3.6.20-2.el5 | 0:3.6.20-2.el5 |
firefox-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 6 CVEs |
before 0:3.6.20-2.el5 | 0:3.6.20-2.el5 |
xulrunnerRed Hat:enterprise_linux:5::client From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::client From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
firefoxRed Hat:enterprise_linux:5::server From an advisory covering 6 CVEs |
before 0:3.6.20-2.el5 | 0:3.6.20-2.el5 |
firefox-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 6 CVEs |
before 0:3.6.20-2.el5 | 0:3.6.20-2.el5 |
xulrunnerRed Hat:enterprise_linux:5::server From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
xulrunner-debuginfoRed Hat:enterprise_linux:5::server From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
xulrunner-develRed Hat:enterprise_linux:5::server From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el5 | 0:1.9.2.20-2.el5 |
firefoxRed Hat:enterprise_linux:6::server From an advisory covering 6 CVEs |
before 0:3.6.20-2.el6_1 | 0:3.6.20-2.el6_1 |
firefox-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 6 CVEs |
before 0:3.6.20-2.el6_1 | 0:3.6.20-2.el6_1 |
xulrunnerRed Hat:enterprise_linux:6::server From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el6_1 | 0:1.9.2.20-2.el6_1 |
xulrunner-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el6_1 | 0:1.9.2.20-2.el6_1 |
xulrunner-develRed Hat:enterprise_linux:6::server From an advisory covering 6 CVEs |
before 0:1.9.2.20-2.el6_1 | 0:1.9.2.20-2.el6_1 |
thunderbirdRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:3.1.12-1.el6_1 | 0:3.1.12-1.el6_1 |
thunderbird-debuginfoRed Hat:enterprise_linux:6::server From an advisory covering 3 CVEs |
before 0:3.1.12-1.el6_1 | 0:3.1.12-1.el6_1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2011-2378 is a high vulnerability (CVSS 10.0) in Mozilla Firefox, published August 17, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.61%, the 92nd percentile. No source names a fixed version.
References
mandriva.com/security/advisories?name=MDVSA-2011:127
mozilla.org/security/announce/2011/mfsa2011-30.html
bugzilla.mozilla.org/show_bug.cgi?id=648065
debian.org/security/2011/dsa-2297
lists.opensuse.org/opensuse-security-announce/2011-08/msg00027.html
Show 36 moreShow less
redhat.com/support/errata/RHSA-2011-1166.html
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14163
nvd.nist.gov/vuln/detail/CVE-2011-2378
github.com/advisories/GHSA-q8vw-h86h-vfj9
access.redhat.com/errata/RHSA-2011:1164
bugzilla.redhat.com/show_bug.cgi?id=730518
security.access.redhat.com/data/csaf/v2/advisories/2011/rhsa-2011_1164.json
cve.org/CVERecord?id=CVE-2011-0084