Description
Mozilla Firefox before 23.0, Firefox ESR 17.x before 17.0.8, Thunderbird before 17.0.8, Thunderbird ESR 17.x before 17.0.8, and SeaMonkey before 2.20 do not properly restrict local-filesystem access by Java applets, which allows user-assisted remote attackers to read arbitrary files by leveraging a download to a fixed pathname or other predictable pathname.
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 | 17.0.8-1~deb7u1 | DSA-2746-1 |
| Debian 7 | iceweasel | 17.0.8esr-1~deb7u1 | DSA-2735-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | firefox | 17.0.8-1.el6_4 | RHSA-2013:1140 |
| RHEL 6 | thunderbird | 17.0.8-5.el6_4 | RHSA-2013:1142 |
| RHEL 6 | xulrunner +1 | 17.0.8-3.el6_4 | RHSA-2013:1140 |
| RHEL 5 | firefox | 17.0.8-1.el5_9 | RHSA-2013:1140 |
| RHEL 5 | xulrunner +1 | 17.0.8-3.el5_9 | RHSA-2013:1140 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Productivity 5 | thunderbird | 17.0.8-5.el5_9 | RHSA-2013:1142 |
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 |
Advisories 7
- RHSA-2013:1140 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- RHSA-2013:1142 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Jun 29, 2026
- DSA-2735-1 iceweasel - several Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-2746-1 icedove - several 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
- 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
References
- DSA-2746 vendor-advisory
- 61896 vdb-entry
- oval:org.mitre.oval:def:18367 vdb-entry signature
- http://www.mozilla.org/security/announce/2013/mfsa2013-75.html
- DSA-2735 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=406541