A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message. This…

Description

A mechanism to bypass file system access protections in the sandbox using the file system request constructor through an IPC message. This allows for read and write access to the local file system. This vulnerability affects Firefox ESR < 52.1 and Firefox < 53.

Scores

EPSS (exploitation in 30 days)

2.7% · top 14% of all CVEs (3 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.

Weakness

• Sandbox escape allowing local file system access
• CWE-732 (opens in a new tab)All about CWE-732 and its CVEs

Affected products

• Mozilla · Firefox ESR

  • affected unspecified – < 52.1

• Mozilla · Firefox

  • affected unspecified – < 53

References (6)

• RHSA-2017:1106 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://www.mozilla.org/security/advisories/mfsa2017-12/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://bugzilla.mozilla.org/show_bug.cgi?id=1344415 (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://www.mozilla.org/security/advisories/mfsa2017-10/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• 97940 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 1038320 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred

Sources

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

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2017-5456](https://trackcve.app/badge/CVE-2017-5456.svg)](https://trackcve.app/cve/CVE-2017-5456)

Record last updated 5 Aug 2024, 15:04 UTC.