Mozilla: Location object can be shadowed using Object.defineProperty (MFSA 2012-59)
Published Aug 29, 2012
4.3
MEDIUMCVSS 2.0
EPSS 1.89%
Description
Mozilla Firefox before 15.0, Thunderbird before 15.0, and SeaMonkey before 2.12 do not prevent use of the Object.defineProperty method to shadow the location object (aka window.location), which makes it easier for remote attackers to conduct cross-site scripting (XSS) attacks via vectors involving a plugin.
Affected products
No data.
Configuration 1
- ≤ 14.0
- 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
- 1.4.1
- 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
- 1.8
- 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
- 3.6
- 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
- 3.6.19
- 3.6.20
- 3.6.21
- 3.6.22
- 3.6.23
- 3.6.24
- 3.6.25
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0.1
- 5.0
- 5.0.1
- 6.0
- 6.0.1
- 6.0.2
- 7.0
- 7.0.1
- 8.0
- 8.0.1
- 9.0
- 9.0.1
- 10.0
- 10.0.1
- 10.0.2
- 11.0
- 12.0
- 12.0
- 13.0
Configuration 2
- ≤ 14.0
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 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
- 1.5.0.13
- 1.5.0.14
- 1.5.1
- 1.5.2
- 1.7.1
- 1.7.3
- 2.0
- 2.0.0.0
- 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
- 2.0.0.11
- 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
- 2.0.0.21
- 2.0.0.22
- 2.0.0.23
- 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
- 3.1.8
- 3.1.9
- 3.1.10
- 3.1.11
- 3.1.12
- 3.1.13
- 3.1.14
- 3.1.15
- 3.1.16
- 3.1.17
- 5.0
- 6.0
- 6.0.1
- 6.0.2
- 7.0
- 7.0.1
- 8.0
- 9.0
- 9.0.1
- 10.0
- 10.0.1
- 10.0.2
- 10.0.3
- 10.0.4
- 11.0
- 12.0
- 13.0
Configuration 3
- ≤ 2.11
- 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
- 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
- 2.9
- 2.10
No data.
Red Hat Enterprise Linux 5
firefox-0:10.0.8-1.el5_8
Fixed · RHSA-2012:1350
Red Hat Enterprise Linux 5
thunderbird-0:10.0.8-1.el5_8
Fixed · RHSA-2012:1351
Red Hat Enterprise Linux 5
xulrunner-0:10.0.8-1.el5_8
Fixed · RHSA-2012:1350
Red Hat Enterprise Linux 6
firefox-0:10.0.8-1.el6_3
Fixed · RHSA-2012:1350
Red Hat Enterprise Linux 6
thunderbird-0:10.0.8-1.el6_3
Fixed · RHSA-2012:1351
Red Hat Enterprise Linux 6
xulrunner-0:10.0.8-1.el6_3
Fixed · RHSA-2012:1350
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:10.0.8-1.el5_8 | Fixed | RHSA-2012:1350 |
| Red Hat Enterprise Linux 5 | thunderbird-0:10.0.8-1.el5_8 | Fixed | RHSA-2012:1351 |
| Red Hat Enterprise Linux 5 | xulrunner-0:10.0.8-1.el5_8 | Fixed | RHSA-2012:1350 |
| Red Hat Enterprise Linux 6 | firefox-0:10.0.8-1.el6_3 | Fixed | RHSA-2012:1350 |
| Red Hat Enterprise Linux 6 | thunderbird-0:10.0.8-1.el6_3 | Fixed | RHSA-2012:1351 |
| Red Hat Enterprise Linux 6 | xulrunner-0:10.0.8-1.el6_3 | Fixed | RHSA-2012:1350 |
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:M/Au:N/C:N/I:P/A:N
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.89% (0.01888) | 78.78th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.89% (0.01888) | 76.76th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.74% (0.00743) | 71.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00333) | 72.03th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00333) | 70.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00333) | 66.53th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.96% (0.01955) | 78.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.96% (0.01955) | 76.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.96% (0.01955) | 55.71th | v2 (v2022.01.01) |
References (14)
- http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2012-1351.html vendor-advisoryx_refsource_REDHAT
- http://www.mozilla.org/security/announce/2012/mfsa2012-59.html x_refsource_CONFIRMVendor Advisory
- http://www.securityfocus.com/bid/55260 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-1548-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-1548-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2012-1956 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=756719 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=851912 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2012-1956
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16367 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2012-1956
Change history (0)
No recorded changes yet.