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MFSA2017-16 Firefox: Security vulnerabilities fixed in Firefox ESR 52.2 (CVE-2017-7761)

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MFSA2017-16 Firefox: Security vulnerabilities fixed in Firefox ESR 52.2 (CVE-2017-7761)

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:N/I:P/A:P)
Published
06/13/2017
Created
07/25/2018
Added
06/14/2017
Modified
08/16/2018

Description

The Mozilla Maintenance Service "helper.exe" application creates a temporary directory writable by non-privileged users. When this is combined with creation of a junction (a form of symbolic link), protected files in the target directory of the junction can be deleted by the Mozilla Maintenance Service, which has 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.

Solution(s)

  • mozilla-firefox-esr-upgrade-52_2

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