An out-of-bounds write in "ClearKeyDecryptor" while decrypting some Clearkey-encrypted media content. The "ClearKeyDecryptor" code runs within the Gecko Media Plugin (GMP) sandbox. If a second mechanism is found to escape the sandbox, this vulnerability allows for the writing of arbitrary data within memory, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-906-1 firefox-esr security update
Debian DSA Debian DSA DSA-3831-1 firefox-esr security update
EUVD EUVD EUVD-2017-14552 An out-of-bounds write in "ClearKeyDecryptor" while decrypting some Clearkey-encrypted media content. The "ClearKeyDecryptor" code runs within the Gecko Media Plugin (GMP) sandbox. If a second mechanism is found to escape the sandbox, this vulnerability allows for the writing of arbitrary data within memory, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.
Ubuntu USN Ubuntu USN USN-3260-1 Firefox vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T15:04:14.312Z

Reserved: 2017-01-13T00:00:00.000Z

Link: CVE-2017-5448

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:06.453

Modified: 2025-11-25T17:50:16.803

Link: CVE-2017-5448

cve-icon Redhat

Severity : Important

Publid Date: 2017-04-19T00:00:00Z

Links: CVE-2017-5448 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses