CVE-2016-2826
The maintenance service in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 on Windows does not prevent MAR extracted-file modification during updater execution, which might allow local users to gain privileges via a Trojan horse file.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The maintenance service in Mozilla Firefox before 47.0 and Firefox ESR 45.x before 45.2 on Windows does not prevent MAR extracted-file modification during updater execution, which might allow local users to gain privileges via a Trojan horse file.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.34% probability · 27th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
References
- http://www.mozilla.org/security/announce/2016/mfsa2016-55.htmlVendor Advisory
- http://www.securityfocus.com/bid/91075
- http://www.securitytracker.com/id/1036057
- https://bugzilla.mozilla.org/show_bug.cgi?id=1237219
- http://www.mozilla.org/security/announce/2016/mfsa2016-55.htmlVendor Advisory
- http://www.securityfocus.com/bid/91075
- http://www.securitytracker.com/id/1036057
- https://bugzilla.mozilla.org/show_bug.cgi?id=1237219
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.