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.
CVSS Details
- CVSS 3.1 Base Score: 5.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Freebsd | — | Upgrade linux-firefoxUpgrade linux-thunderbirdUpgrade firefox-esrUpgrade seamonkeyUpgrade libxulUpgrade firefoxUpgrade linux-seamonkeyUpgrade thunderbird | Jun 16, 2017 | Jun 13, 2017 |
| Mfsa2017 15 | — | Upgrade to Mozilla Firefox version 54.0 | Jul 12, 2018 | Jun 11, 2018 |
| Mfsa2017 16 | — | Upgrade to Mozilla Firefox ESR version 52.2 | Jun 14, 2017 | Jun 13, 2017 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade mail/thunderbird/plugin/thunderbird-lightning to version 52.2.0-0.175.3.22.0.3.0 on Solaris 11.3Upgrade web/data/firefox-bookmarks to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade web/browser/firefox/plugin/firefox-java to version 52.2.0-0.175.3.22.0.2.0 on Solaris 11.3Upgrade mail/thunderbird to version 52.2.0-0.175.3.22.0.3.0 on Solaris 11.3 | Jul 19, 2017 | Jul 19, 2017 |
| Suse | — | Upgrade MozillaFirefox-translations-otherUpgrade libsoftokn3Upgrade mozilla-nss-toolsUpgrade MozillaFirefox-translationsUpgrade libfreebl3-x86Upgrade mozillafirefox-branding-sleUpgrade libfreebl3-32bitUpgrade MozillaFirefoxUpgrade mozilla-nss-x86Upgrade mozilla-nss-32bitUpgrade libfreebl3Upgrade mozilla-nss-develUpgrade firefox-libstdc++6Upgrade firefox-libffi4Upgrade libsoftokn3-x86Upgrade MozillaFirefox-translations-commonUpgrade MozillaFirefox-develUpgrade libsoftokn3-32bitUpgrade mozilla-nssUpgrade MozillaFirefox-branding-SLED | Jun 19, 2017 | Jun 13, 2017 |
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