CVE-2017-7761

LOW

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.

References

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

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

https://bugzilla.mozilla.org/show_bug.cgi?id=1215648

https://sourceforge.net/p/nsis/bugs/1125/

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

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

Details

Source: MITRE

Published: 2018-06-11

Updated: 2019-10-03

Type: CWE-276

Risk Information

CVSS v2.0

Base Score: 3.6

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

Impact Score: 4.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3.0

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Tenable Plugins

View all (9 total)

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