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TI-2017-05387 Aliases CVE-2017-7767GHSA-cfrv-hc6m-h3rp

Improper privilege management in Mozilla Firefox ESR

Priority LOW 25CWE-269Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-269.

Summary

The Mozilla Maintenance Service can be invoked by an unprivileged user to overwrite arbitrary files with junk data using the Mozilla Windows Updater, which runs with the Maintenance Service's privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.

Why it matters now

EPSS 0.00277 20th percentileScored 2026-11-07
Fix Fixed Firefox ESR (Mozilla): 52.2Firefox (Mozilla): 54

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox ESRbefore 52.252.2Patch availableCNA
MozillaFirefoxbefore 5454Patch availableCNA
  • Firefox ESR VendorMozilla Affected before 52.2 Fixed in 52.2 Patch available CNA
  • Firefox VendorMozilla Affected before 54 Fixed in 54 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*before 52.2.0; before 54.0VulnerableMozilla
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* Versions before 52.2.0; before 54.0 Vulnerable ·Mozilla
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

  • Fix · CNA Firefox ESR (Mozilla) Fixed in 52.2
  • Fix · CNA Firefox (Mozilla) Fixed in 54

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox 54

    12 records Highest priority Priority MEDIUM 1 MEDIUM, 11 LOW

    Other records, highest priority first

    • TI-2017-03494 Memory corruption in Mozilla FirefoxPriority MEDIUM 46
    • TI-2017-05382 Improper input validation in Mozilla FirefoxPriority LOW 37
    • TI-2017-05375 Untrusted search path in Mozilla FirefoxPriority LOW 37
    Show all 12 records →
  • Release ·

    Mozilla Firefox ESR 52.2

    8 records Highest priority Priority LOW 8 LOW

    Other records, highest priority first

    • TI-2017-05375 Untrusted search path in Mozilla FirefoxPriority LOW 37
    • TI-2017-05385 Improper input validation in Mozilla FirefoxPriority LOW 36
    • TI-2017-05386 An attack using manipulation of "updater.ini" contents, used by the Mozilla Windows…Priority LOW 34
    Show all 8 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2017-7767
  2. 2026-10-03 Alias added: GHSA-cfrv-hc6m-h3rp

References

Advisory 3

  • TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
  • TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 3444 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences