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CVE-2017-5448

An out-of-bounds write in "ClearKeyDecryptor" while decrypting some Clearkey-encrypted media content. The "ClearKeyDecryptor" code runs…

High8.6EPSS 2.0%
Published
Updated
Reserved
Assigned by
mozilla

Description

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.

Scores

CVSS scores of CVE-2017-5448, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified3.0High8.6CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
EPSS (exploitation in 30 days)
2.0% · top 19% of all CVEs (3 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.6.

Weakness

Affected products

  • Mozilla · Firefox ESR

    • affected unspecified – < 45.9
    • affected unspecified – < 52.1

  • Mozilla · Firefox

    • affected unspecified – < 53

References (9)

Sources

The same CVE in the primary databases and aggregators, to check against.

Record last updated .