CVE-2017-7761
First published: Tue Jun 13 2017(Updated: )
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.
Credit: security@mozilla.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Mozilla Firefox ESR | <52.2 | 52.2 |
| <54 | 54 | |
| <52.2 | 52.2 | |
| Mozilla Firefox | <54.0 | |
| Mozilla Firefox ESR | <52.2.0 | |
| Microsoft Windows |
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Reference Links
- https://bugzilla.mozilla.org/show_bug.cgi?id=1215648
- https://sourceforge.net/p/nsis/bugs/1125/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-16/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-15/
- https://www.mozilla.org/en-US/security/advisories/mfsa2017-16/#CVE-2017-7758
- http://www.securityfocus.com/bid/99057
- http://www.securitytracker.com/id/1038689
- https://www.mozilla.org/security/advisories/mfsa2017-15/
- https://www.mozilla.org/security/advisories/mfsa2017-16/
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2017-5472
- CVE-2017-7749
- CVE-2017-7750
- CVE-2017-7751
- CVE-2017-7752
- CVE-2017-7754
- CVE-2017-7755
- CVE-2017-7756
- CVE-2017-7757
- CVE-2017-7778
- CVE-2017-7758
- CVE-2017-7760
- CVE-2017-7761
- CVE-2017-7763
- CVE-2017-7764
- CVE-2017-7765
- CVE-2017-7766
- CVE-2017-7767
- CVE-2017-7768
- CVE-2017-5470
- CVE-2017-7759
- CVE-2017-7762
- CVE-2017-7770
- CVE-2017-5471
- collector/mozilla-advisory
- agent/type
- agent/first-publish-date
- agent/softwarecombine
- source/Mozilla
- agent/software-canonical-lookup
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/description
- agent/software-canonical-lookup-request
- collector/nvd-index
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- agent/trending
- vendor/mozilla
- canonical/mozilla firefox esr
- canonical/mozilla firefox
- vendor/microsoft
- canonical/microsoft windows