CVE-2017-7755

HIGH
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

The Firefox installer on Windows can be made to load malicious DLL files stored in the same directory as the installer when it is run. This allows privileged execution if the installer is run with elevated privileges. Note: This attack only affects Windows operating systems. Other operating systems are unaffected. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.

References

http://www.securityfocus.com/bid/99057

http://www.securitytracker.com/id/1038689

https://bugzilla.mozilla.org/show_bug.cgi?id=1361326

https://www.mozilla.org/security/advisories/mfsa2017-15/

https://www.mozilla.org/security/advisories/mfsa2017-16/

https://www.mozilla.org/security/advisories/mfsa2017-17/

Details

Source: MITRE

Published: 2018-06-11

Updated: 2018-08-08

Type: CWE-426

Risk Information

CVSS v2

Base Score: 6.8

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Tenable Plugins

View all (10 total)

IDNameProductFamilySeverity
102694SUSE SLES11 Security Update : MozillaFirefox, MozillaFirefox-branding-SLED, firefox-gcc5, mozilla-nss (SUSE-SU-2017:2235-1)NessusSuSE Local Security Checks
critical
101772Mozilla Thunderbird < 52.2 Multiple VulnerabilitiesNessusWindows
critical
101055SUSE SLED12 / SLES12 Security Update : MozillaFirefox, MozillaFirefox-branding-SLE (SUSE-SU-2017:1669-1)NessusSuSE Local Security Checks
critical
100885openSUSE Security Update : Mozilla based packages (openSUSE-2017-712)NessusSuSE Local Security Checks
critical
100810Mozilla Firefox < 54 Multiple VulnerabilitiesNessusWindows
critical
100809Mozilla Firefox ESR < 52.2 Multiple VulnerabilitiesNessusWindows
critical
100808Mozilla Firefox < 54 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
100807Mozilla Firefox ESR < 52.2 Multiple Vulnerabilities (macOS)NessusMacOS X Local Security Checks
critical
700134Mozilla Firefox < 54 Multiple VulnerabilitiesNessus Network MonitorWeb Clients
high
100775FreeBSD : mozilla -- multiple vulnerabilities (6cec1b0a-da15-467d-8691-1dea392d4c8d)NessusFreeBSD Local Security Checks
critical