Mozilla: Dangling pointer vulnerability in appendChild
Published Aug 18, 2011
10.0
HIGHCVSS 2.0
EPSS 5.61%
Description
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."
Affected products
No data.
Configuration 1
- ≤ 3.6.19
- 1.0
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.5
- 1.5
- 1.5
- 1.5.0.1
- 1.5.0.2
- 1.5.0.3
- 1.5.0.4
- 1.5.0.5
- 1.5.0.6
- 1.5.0.7
- 1.5.0.8
- 1.5.0.9
- 1.5.0.10
- 1.5.0.11
- 1.5.0.12
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.5.6
- 1.5.7
- 1.5.8
- 2.0
- 2.0.0.1
- 2.0.0.2
- 2.0.0.3
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.7
- 2.0.0.8
- 2.0.0.9
- 2.0.0.10
- 2.0.0.11
- 2.0.0.12
- 2.0.0.13
- 2.0.0.14
- 2.0.0.15
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
- 2.0.0.20
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.5
- 3.5.1
- 3.5.2
- 3.5.3
- 3.5.4
- 3.5.5
- 3.5.6
- 3.5.7
- 3.5.8
- 3.5.9
- 3.5.10
- 3.5.11
- 3.5.12
- 3.5.13
- 3.5.14
- 3.5.15
- 3.5.16
- 3.5.17
- 3.5.18
- 3.5.19
- 3.6
- 3.6.2
- 3.6.3
- 3.6.4
- 3.6.6
- 3.6.7
- 3.6.8
- 3.6.9
- 3.6.10
- 3.6.11
- 3.6.12
- 3.6.13
- 3.6.14
- 3.6.15
- 3.6.16
- 3.6.17
- 3.6.18
Configuration 2
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.1
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.1.6
- 3.1.7
- 3.1.10
- 3.1.11
Configuration 3
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.0.9
- 2.0.10
- 2.0.11
- 2.0.12
- 2.0.13
- 2.0.14
- 2.1
- 2.1
- 2.1
Running on/with
- 2.1
- 2.1
- 2.1
- 2.1
- 2.1
- 2.1
- 2.2
- 2.2
- 2.2
- 2.2
- 2.3
- 2.3
- 2.3
- 2.3
- 2.3.1
- 2.3.2
- 2.3.3
- 2.4
- 2.4
- 2.4
- 2.4
- 2.4.1
- 2.5
- 2.5
- 2.5
- 2.5
- 2.5
- 2.6
- 2.6
- 2.6
- 2.6
- 2.6
- 2.6.1
- 2.7
- 2.7
- 2.7
- 2.7
- 2.7
- 2.7
- 2.7.1
- 2.7.2
- 2.8
- 2.8
- 2.8
- 2.8
- 2.8
- 2.8
- 2.8
- 2.9
- 2.9
- 2.9
No data.
Red Hat Enterprise Linux 4
firefox-0:3.6.20-2.el4
Fixed · RHSA-2011:1164
Red Hat Enterprise Linux 5
firefox-0:3.6.20-2.el5
Fixed · RHSA-2011:1164
Red Hat Enterprise Linux 5
xulrunner-0:1.9.2.20-2.el5
Fixed · RHSA-2011:1164
Red Hat Enterprise Linux 6
firefox-0:3.6.20-2.el6_1
Fixed · RHSA-2011:1164
Red Hat Enterprise Linux 6
thunderbird-0:3.1.12-1.el6_1
Fixed · RHSA-2011:1166
Red Hat Enterprise Linux 6
xulrunner-0:1.9.2.20-2.el6_1
Fixed · RHSA-2011:1164
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | firefox-0:3.6.20-2.el4 | Fixed | RHSA-2011:1164 |
| Red Hat Enterprise Linux 5 | firefox-0:3.6.20-2.el5 | Fixed | RHSA-2011:1164 |
| Red Hat Enterprise Linux 5 | xulrunner-0:1.9.2.20-2.el5 | Fixed | RHSA-2011:1164 |
| Red Hat Enterprise Linux 6 | firefox-0:3.6.20-2.el6_1 | Fixed | RHSA-2011:1164 |
| Red Hat Enterprise Linux 6 | thunderbird-0:3.1.12-1.el6_1 | Fixed | RHSA-2011:1166 |
| Red Hat Enterprise Linux 6 | xulrunner-0:1.9.2.20-2.el6_1 | Fixed | RHSA-2011:1164 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.61% (0.05608) | 92.67th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.56% (0.05556) | 91.82th | v5 (v2026.06.15) |
| Feb 17, 2026 | 4.96% (0.04955) | 89.42th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.72% (0.03719) | 86.88th | v4 (v2025.03.14) |
| Mar 29, 2025 | 15.02% (0.15017) | 90.97th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.72% (0.03719) | 87.18th | v4 (v2025.03.14) |
| Jan 13, 2025 | 52.21% (0.52208) | 97.71th | v3 (v2023.03.01) |
| Dec 17, 2024 | 59.18% (0.59181) | 97.88th | v3 (v2023.03.01) |
| Sep 3, 2024 | 76.90% (0.76896) | 98.26th | v3 (v2023.03.01) |
| Mar 7, 2023 | 78.61% (0.78613) | 97.67th | v3 (v2023.03.01) |
| Mar 6, 2023 | 11.27% (0.11270) | 95.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 11.27% (0.11270) | 94.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 11.27% (0.11270) | 88.71th | v2 (v2022.01.01) |
References (15)
- http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00023.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00027.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2011/dsa-2295 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2011/dsa-2296 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2011/dsa-2297 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:127 vendor-advisoryx_refsource_MANDRIVA
- http://www.mozilla.org/security/announce/2011/mfsa2011-30.html x_refsource_CONFIRMVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2011-1164.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://www.redhat.com/support/errata/RHSA-2011-1166.html vendor-advisoryx_refsource_REDHATVendor Advisory
- https://access.redhat.com/security/cve/CVE-2011-2378 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=648065 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=730521 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-2378
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14163 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2011-2378
Change history (0)
No recorded changes yet.