Description
Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 do not properly restrict resource: URLs, which makes it easier for remote attackers to execute arbitrary JavaScript code with chrome privileges by leveraging the ability to bypass the Same Origin Policy, as demonstrated by the resource: URL associated with PDF.js.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | icedove | 31.6.0-1~deb7u1 | DSA-3212-1 |
| Debian 7 | iceweasel | 31.6.0esr-1~deb7u1 | DSA-3211-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 37.0+build2-0ubuntu0.14.04.1 | USN-2550-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:31.6.0+build1-0ubuntu0.14.04.1 | USN-2552-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox +1 | 31.6.0-2.el7_1 | RHSA-2015:0766 |
| RHEL 7 | thunderbird | 31.6.0-1.ael7b_1 | RHSA-2015:0771 |
| RHEL 7 | xulrunner-devel | 31.6.0-2.ael7b_1 | RHSA-2015:0766 |
| RHEL 6 | firefox | 31.6.0-2.el6_6 | RHSA-2015:0766 |
| RHEL 6 | thunderbird | 31.6.0-1.el6_6 | RHSA-2015:0771 |
| RHEL 5 | firefox | 31.6.0-2.el5_11 | RHSA-2015:0766 |
| RHEL 5 | thunderbird | 31.6.0-1.el5_11 | RHSA-2015:0771 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 31.6.0-1.el5_11 | RHSA-2015:0771 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 31.6.0esr-30.1 | SUSE-SU-2015:0704-2, SUSE-SU-2015:0704-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | MozillaFirefox | 31.6.0esr-30.1 | SUSE-SU-2015:0704-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | firefox +2 | 31.6.0-2.0.1.el7_1 | ELSA-2015-0766 |
| Oracle Linux 7 | thunderbird | 31.6.0-1.0.1.el7_1 | ELSA-2015-0771 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
-
Firefox PDF.js Privileged Javascript Injection
exploit/multi/browser/firefox_pdfjs_privilege_escalation
Exploit-DB 1
- Mozilla Firefox - 'pdf.js' Privileged JavaScript Injection (Metasploit) EDB-37958 · remote · Aug 24, 2015 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 13
- RHSA-2015:0771 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 1, 2026
- RHSA-2015:0766 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 1, 2026
- USN-2552-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2550-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3212-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3211-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0704-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:0704-2 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10071-1 MozillaFirefox-50.1.0-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2015-0771 Important: thunderbird security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 1, 2015
- ELSA-2015-0766 Critical: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Apr 1, 2015
References
- 1031996 vdb-entry
- 73461 vdb-entry
- openSUSE-SU-2015:0892 vendor-advisory
- GLSA-201512-10 vendor-advisory
- DSA-3212 vendor-advisory
- 37958 exploit
- SUSE-SU-2015:0704 vendor-advisory
- USN-2552-1 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1144991
- RHSA-2015:0766 vendor-advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-33.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- openSUSE-SU-2015:1266 vendor-advisory
- USN-2550-1 vendor-advisory
- 1032000 vdb-entry
- openSUSE-SU-2015:0677 vendor-advisory
- RHSA-2015:0771 vendor-advisory
- DSA-3211 vendor-advisory