Mozilla: Privilege escalation through internal workers (MFSA 2015-69)
Published Jul 6, 2015
7.5
HIGHCVSS 2.0
EPSS 4.74%
Description
PDF.js in Mozilla Firefox before 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1 enables excessive privileges for internal Workers, which might allow remote attackers to execute arbitrary code by leveraging a Same Origin Policy bypass.
Affected products
No data.
Configuration 1
- 31.0
- 31.1.0
- 31.1.1
- 31.3.0
- 31.5.1
- 31.5.2
- 31.5.3
- 38.0
- 31.1
- 31.2
- 31.3
- 31.4
- 31.5
- 31.6.0
- 31.7.0
Configuration 4
- 12.0
- 12.0
- 11
- 12.0
No data.
Red Hat Enterprise Linux 5
firefox-0:38.1.0-1.el5_11
Fixed · RHSA-2015:1207
Red Hat Enterprise Linux 6
firefox-0:38.1.0-1.el6_6
Fixed · RHSA-2015:1207
Red Hat Enterprise Linux 7
firefox-0:38.1.0-1.ael7b_1
Fixed · RHSA-2015:1207
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:38.1.0-1.el5_11 | Fixed | RHSA-2015:1207 |
| Red Hat Enterprise Linux 6 | firefox-0:38.1.0-1.el6_6 | Fixed | RHSA-2015:1207 |
| Red Hat Enterprise Linux 7 | firefox-0:38.1.0-1.ael7b_1 | Fixed | RHSA-2015:1207 |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the version of thunderbird package, as shipped with Red Hat Enterprise Linux 5, 6 and 7.
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: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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.74% (0.04738) | 91.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.93% (0.04930) | 90.98th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.83% (0.00832) | 72.42th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.23% (0.03227) | 78.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.83% (0.00832) | 72.93th | v4 (v2025.03.14) |
| Dec 17, 2024 | 2.20% (0.02201) | 89.08th | v3 (v2023.03.01) |
| Sep 19, 2024 | 3.52% (0.03518) | 91.73th | v3 (v2023.03.01) |
| Mar 12, 2024 | 2.51% (0.02512) | 89.84th | v3 (v2023.03.01) |
| Aug 4, 2023 | 1.68% (0.01679) | 86.05th | v3 (v2023.03.01) |
| Apr 27, 2023 | 1.64% (0.01641) | 85.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.27% (0.01272) | 83.54th | v3 (v2023.03.01) |
| Mar 6, 2023 | 14.36% (0.14355) | 95.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 14.36% (0.14355) | 95.47th | v2 (v2022.01.01) |
| Feb 4, 2022 | 14.36% (0.14355) | 91.00th | v2 (v2022.01.01) |
References (20)
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1207.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3300 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2015/mfsa2015-69.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRMThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/bid/75541 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032783 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2656-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2656-2 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-2743 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1163109 x_refsource_CONFIRMIssue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=1236964 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-2743
- https://security.gentoo.org/glsa/201512-10 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-2743
Change history (0)
No recorded changes yet.