Description
The WebRTC video-sharing feature in dom/media/MediaManager.cpp in Mozilla Firefox before 33.0, Firefox ESR 31.x before 31.2, and Thunderbird 31.x before 31.2 does not properly recognize Stop Sharing actions for videos in IFRAME elements, which allows remote attackers to obtain sensitive information from the local camera by maintaining a session after the user tries to discontinue streaming.
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 | 31.2.0-1~deb7u1 | DSA-3061-1 |
| Debian 7 | iceweasel | 31.2.0esr-2~deb7u1 | DSA-3050-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | firefox | 33.0+build2-0ubuntu0.14.04.1 | USN-2372-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:31.2.0+build2-0ubuntu0.14.04.1 | USN-2373-1 |
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 |
Advisories 7
- USN-2373-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2372-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3061-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3050-1 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
- 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
- 62021 third-party-advisory
- openSUSE-SU-2015:0138 vendor-advisory
- openSUSE-SU-2014:1344 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1062876
- openSUSE-SU-2014:1346 vendor-advisory
- FEDORA-2014-13042 vendor-advisory
- http://www.mozilla.org/security/announce/2014/mfsa2014-81.html
- 1031028 vdb-entry
- openSUSE-SU-2014:1345 vendor-advisory
- USN-2373-1 vendor-advisory
- GLSA-201504-01 vendor-advisory
- FEDORA-2014-14084 vendor-advisory
- 61387 third-party-advisory
- USN-2372-1 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- 62022 third-party-advisory
- openSUSE-SU-2015:1266 vendor-advisory
- 1031030 vdb-entry
- 62023 third-party-advisory
- openSUSE-SU-2014:1343 vendor-advisory
- 70425 vdb-entry
- DSA-3050 vendor-advisory
- DSA-3061 vendor-advisory