CVE-2015-4495
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…
High
Known exploited
- Severity
- 8.8 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 68.56%
- Chance of exploitation in the next 30 days. Higher than 99.34% of scored vulnerabilities.
- Known exploited
- Yes
- In CISA's catalog since May 25, 2022
- Weakness
- —
- Not classified
- Fix
- None yet
- No fixed version published
Exploited in the wild. Mozilla Firefox Security Feature Bypass Vulnerability (Mozilla Firefox). Required action: Apply updates per vendor instructions. Due for U.S. federal agencies by Jun 15, 2022.
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.
How to fix
No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.
Severity breakdown
CVSS 3.1 8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
References
Advisories
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.html
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.html
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html
- rhn.redhat.com/errata/RHSA-2015-1581.html
- mozilla.org/security/announce/2015/mfsa2015-78.html
- oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- securityfocus.com/bid/76249
- securitytracker.com/id/1033216
- ubuntu.com/usn/USN-2707-1
- blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild
- security.gentoo.org/glsa/201512-10
- exploit-db.com/exploits/37772
Issue reports
Timeline
- Published
- Added to CISA's Known Exploited Vulnerabilities catalog
- Remediation due for U.S. federal agencies
- Last updated by the source
- Latest EPSS score
MergeHarbor checks every repository's dependencies against this database, ranks what matters by exploitability and reachability, routes it to the owning team and opens the fix pull request.
Check your repos with MergeHarbor