Description
The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypass the Same Origin Policy, and read arbitrary files or gain privileges, via vectors involving crafted JavaScript code and a native setter, as exploited in the wild in August 2015.
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 14 | pdf.js | 1.1.366+dfsg-1 | — |
| Debian 13 | pdf.js | 1.1.366+dfsg-1 | — |
| Debian 12 | pdf.js | 1.1.366+dfsg-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 39.0.3+build2-0ubuntu0.14.04.1 | USN-2707-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | firefox | 38.1.1-1.el7_1 | RHSA-2015:1581 |
| RHEL 6 | firefox | 38.1.1-1.el6_7 | RHSA-2015:1581 |
| RHEL 5 | firefox | 38.1.1-1.el5_11 | RHSA-2015:1581 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | MozillaFirefox | 31.8.0esr-40.1 | SUSE-SU-2015:1476-1, SUSE-SU-2015:1379-1 |
| SLES 12 | MozillaFirefox-branding-SLE | 31.0-14.1 | SUSE-SU-2015:1476-1 |
| SLES 12 | mozilla-nss | 3.19.2.0-26.2 | SUSE-SU-2015:1476-1 |
| SLES 11 SP4 | MozillaFirefox | 31.8.0esr-0.13.2 | SUSE-SU-2015:1528-1, SUSE-SU-2015:1380-1 |
| SLES 11 SP4 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES 11 SP4 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
| SLES 11 SP3 | MozillaFirefox | 31.8.0esr-0.13.2 | SUSE-SU-2015:1528-1, SUSE-SU-2015:1380-1 |
| SLES 11 SP3 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES 11 SP3 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
| SLES 11 SP2 | MozillaFirefox | 38.2.0esr-10.1 | SUSE-SU-2015:1449-1 |
| SLES 11 SP2 | MozillaFirefox-branding-SLED | 31.0-0.5.7.11 | SUSE-SU-2015:1449-1 |
| SLES 11 SP2 | firefox-gcc47 | 4.7.2_20130108-0.37.2 | SUSE-SU-2015:1449-1 |
| SLES 11 SP2 | mozilla-nss | 3.19.2.0-0.7.1 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | MozillaFirefox | 38.2.0esr-10.1 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | MozillaFirefox-branding-SLED | 31.0-0.5.7.11 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | firefox-gcc47 | 4.7.2_20130108-0.37.2 | SUSE-SU-2015:1449-1 |
| SLES 11 SP1 | mozilla-nss | 3.19.2.0-0.7.1 | SUSE-SU-2015:1449-1 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | MozillaFirefox | 31.8.0esr-40.1 | SUSE-SU-2015:1476-1, SUSE-SU-2015:1379-1 |
| SLES for SAP 12 | MozillaFirefox-branding-SLE | 31.0-14.1 | SUSE-SU-2015:1476-1 |
| SLES for SAP 12 | mozilla-nss | 3.19.2.0-26.2 | SUSE-SU-2015:1476-1 |
| SLES for SAP 11 SP4 | MozillaFirefox | 31.8.0esr-0.13.2 | SUSE-SU-2015:1528-1, SUSE-SU-2015:1380-1 |
| SLES for SAP 11 SP4 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP3 | MozillaFirefox | 31.8.0esr-0.13.2 | SUSE-SU-2015:1528-1, SUSE-SU-2015:1380-1 |
| SLES for SAP 11 SP3 | MozillaFirefox-branding-SLED | 31.0-0.12.51 | SUSE-SU-2015:1528-1 |
| SLES for SAP 11 SP3 | mozilla-nss | 3.19.2.0-0.16.1 | SUSE-SU-2015:1528-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| 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 | 38.1.1-1.0.1.el7_1 | ELSA-2015-1581 |
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 Browser File Theft
auxiliary/gather/firefox_pdfjs_file_theft
Exploit-DB 1
- Mozilla Firefox < 39.03 - 'pdf.js' Same Origin Policy EDB-37772 · local · Aug 15, 2015
GitHub 1 repository
-
vincd/CVE-2015-4495 ★ 1 · Aug 10, 2015
Exploit for CVE-2015-4495 / mfsa2015-78
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 10
- RHSA-2015:1581 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-2707-1 firefox vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- SUSE-SU-2015:1476-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1380-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1449-1 Security update for MozillaFirefox, mozilla-nss 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
- SUSE-SU-2015:1379-1 Security update for MozillaFirefox SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2015:1528-1 Security update for MozillaFirefox, mozilla-nss SUSE / openSUSE Security Updates · May 2, 2025
- ELSA-2015-1581 Important: firefox security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 8, 2015
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1179262
- SUSE-SU-2015:1379 vendor-advisory
- SUSE-SU-2015:1380 vendor-advisory
- 76249 vdb-entry
- 37772 exploit
- RHSA-2015:1581 vendor-advisory
- GLSA-201512-10 vendor-advisory
- openSUSE-SU-2015:1389 vendor-advisory
- USN-2707-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- SUSE-SU-2015:1528 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1178058
- https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/
- http://www.mozilla.org/security/announce/2015/mfsa2015-78.html
- 1033216 vdb-entry
- SUSE-SU-2015:1449 vendor-advisory
- openSUSE-SU-2015:1390 vendor-advisory