PT-2017-17931 · Mozilla+2 · Firefox+2

Seb Patane · Published 2017-06-13 · Updated 2019-10-03 · CVE-2017-7766

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Firefox ESR versions prior to 52.2 Firefox versions prior to 54

Description The issue involves manipulation of the updater.ini contents used by the Mozilla Windows Updater, allowing for privilege escalation through the Mozilla Maintenance Service. This enables arbitrary file execution and deletion by the Maintenance Service, which has privileged access. The attack requires local system access and only affects Windows, with other operating systems not being affected.

Recommendations For Firefox ESR versions prior to 52.2, update to version 52.2 or later. For Firefox versions prior to 54, update to version 54 or later.

Fix

Related Identifiers

ALT-PU-2017-1770

ALT-PU-2017-1886

CVE-2017-7766

MGASA-2018-0018

OPENSUSE-SU-2017_1620-1

Affected Products

Alt Linux

Firefox

Suse

References · 17

• https://mozilla.org/en-US/security/advisories/mfsa2017-12 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2017-28 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2018-0018.html · Security Note
• https://mozilla.org/en-US/security/advisories/mfsa2017-16 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2017-16 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2017-25 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2017-19 · Vendor Advisory
• https://mozilla.org/security/advisories/mfsa2017-15 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0018 · Vendor Advisory
• https://mozilla.org/en-US/security/advisories/mfsa2017-22 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-7766 · Vendor Advisory
• https://bugzilla.mozilla.org/show_bug.cgi?id=1342742 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-7766 · Security Note
• https://mozilla.org/en-US/security/advisories/mfsa2017-05 · Vendor Advisory
• https://bugs.mageia.org/show_bug.cgi?id=22283 · Note