Mozilla: defaultValue security checks not applied (MFSA 2012-89)
Published Oct 12, 2012
6.8
MEDIUMCVSS 2.0
EPSS 1.16%
Description
Mozilla Firefox before 16.0.1, Firefox ESR 10.x before 10.0.9, Thunderbird before 16.0.1, Thunderbird ESR 10.x before 10.0.9, and SeaMonkey before 2.13.1 omit a security check in the defaultValue function during the unwrapping of security wrappers, which allows remote attackers to bypass the Same Origin Policy and read the properties of a Location object, or execute arbitrary JavaScript code, via a crafted web site.
Affected products
No data.
Configuration 1
- < 16.0.1
- ≥ 10.0 · < 10.0.9
- < 2.13.1
- < 16.0.1
- ≥ 10.0 · < 10.0.9
Configuration 2
- 10
- 11
- 10
- 11
- 11
- 10
Configuration 3
- 10.04
- 11.04
- 11.10
- 12.04
Configuration 4
- 5.0
- 6.0
- 6.3
- 5.0
- 6.0
- 5.0
- 6.0
No data.
Red Hat Enterprise Linux 5
thunderbird-0:10.0.8-2.el5_8
Fixed · RHSA-2012:1362
Red Hat Enterprise Linux 5
xulrunner-0:10.0.8-2.el5_8
Fixed · RHSA-2012:1361
Red Hat Enterprise Linux 6
thunderbird-0:10.0.8-2.el6_3
Fixed · RHSA-2012:1362
Red Hat Enterprise Linux 6
xulrunner-0:10.0.8-2.el6_3
Fixed · RHSA-2012:1361
Red Hat Enterprise Linux 5
firefox
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | thunderbird-0:10.0.8-2.el5_8 | Fixed | RHSA-2012:1362 |
| Red Hat Enterprise Linux 5 | xulrunner-0:10.0.8-2.el5_8 | Fixed | RHSA-2012:1361 |
| Red Hat Enterprise Linux 6 | thunderbird-0:10.0.8-2.el6_3 | Fixed | RHSA-2012:1362 |
| Red Hat Enterprise Linux 6 | xulrunner-0:10.0.8-2.el6_3 | Fixed | RHSA-2012:1361 |
| Red Hat Enterprise Linux 5 | firefox | Affected | n/a |
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:P/I:P/A:P
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 | 1.16% (0.01155) | 65.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.16% (0.01159) | 62.87th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.48% (0.01481) | 79.67th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.62% (0.01621) | 88.00th | v3 (v2023.03.01) |
| Apr 30, 2023 | 2.25% (0.02251) | 87.92th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.87% (0.01868) | 86.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.41% (0.03407) | 84.65th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.41% (0.03407) | 83.10th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.41% (0.03407) | 66.20th | v2 (v2022.01.01) |
References (18)
- http://lists.opensuse.org/opensuse-security-announce/2012-10/msg00010.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2012-1361.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2012-1362.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://secunia.com/advisories/50904 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/50906 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/50907 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/50964 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/50984 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/55318 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://www.mozilla.org/security/announce/2012/mfsa2012-89.html x_refsource_CONFIRMVendor Advisory
- http://www.ubuntu.com/usn/USN-1611-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2012-4193 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=720619 x_refsource_CONFIRMExploitIssue TrackingPatchVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=865215 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79211 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2012-4193
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16786 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2012-4193
Change history (0)
No recorded changes yet.