CVE catalog
CVE-2015-4520
UBUNTU-CVE-2015-4520
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 2.61% · Oct 25, 2026
Mozilla Firefox before 41.0 and Firefox ESR 38.x before 38.3 allow remote attackers to bypass CORS preflight protection mechanisms by leveraging (1) duplicate cache-key generation or (2) retrieval of a value from an incorrect HTTP Access-Control-* response header.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Ubuntu | firefox | 14.04 | 24.0+build1-0ubuntu1 | vulnerable |
| Ubuntu | firefox | 14.04 | 25.0+build3-0ubuntu0.13.10.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 28.0~b2+build1-0ubuntu2 | vulnerable |
| Ubuntu | firefox | 14.04 | 28.0+build1-0ubuntu1 | vulnerable |
| Ubuntu | firefox | 14.04 | 28.0+build2-0ubuntu1 | vulnerable |
| Ubuntu | firefox | 14.04 | 28.0+build2-0ubuntu2 | vulnerable |
| Ubuntu | firefox | 14.04 | 29.0+build1-0ubuntu0.14.04.2 | vulnerable |
| Ubuntu | firefox | 14.04 | 30.0+build1-0ubuntu0.14.04.3 | vulnerable |
| Ubuntu | firefox | 14.04 | 31.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 32.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 32.0.3+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 33.0+build2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 34.0+build2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 35.0+build3-0ubuntu0.14.04.2 | vulnerable |
| Ubuntu | firefox | 14.04 | 35.0.1+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 36.0+build2-0ubuntu0.14.04.4 | vulnerable |
| Ubuntu | firefox | 14.04 | 36.0.1+build2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 36.0.4+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 37.0+build2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 37.0.1+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 37.0.2+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 38.0+build3-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 39.0+build5-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 39.0.3+build2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 40.0+build4-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 40.0+build4-0ubuntu0.14.04.4 | vulnerable |
| Ubuntu | firefox | 14.04 | 40.0.3+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | firefox | 14.04 | 41.0+build3-0ubuntu0.14.04.1 | fixed |
| Ubuntu | thunderbird | 14.04 | 1:24.0+build1-0ubuntu1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.0+build1-0ubuntu2 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.1.1+build1-0ubuntu0.13.10.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.1.1+build1-0ubuntu1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.2.0+build1-0ubuntu1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.4.0+build1-0ubuntu1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.5.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:24.6.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.1.1+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.1.2+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.2.0+build2-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.3.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.4.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.5.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.6.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.7.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:31.8.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:38.2.0+build1-0ubuntu0.14.04.1 | vulnerable |
| Ubuntu | thunderbird | 14.04 | 1:38.3.0+build1-0ubuntu0.14.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Ubuntu | firefox | deb | 14.04 | 41.0+build3-0ubuntu0.14.04.1 | Not reported | UBUNTU-CVE-2015-4520 | Not reported |
| Ubuntu | thunderbird | deb | 14.04 | 1:38.3.0+build1-0ubuntu0.14.04.1 | Not reported | UBUNTU-CVE-2015-4520 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
Observed: