CVE-2016-9064

low-risk
Published 2018-06-11

Add-on updates failed to verify that the add-on ID inside the signed package matched the ID of the add-on being updated. An attacker who could perform a man-in-the-middle attack on the user's connection to the update server and defeat the certificate pinning protection could provide a malicious signed add-on instead of a valid update. This vulnerability affects Firefox ESR < 45.5 and Firefox < 50.

Do I need to act?

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0.27% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.9/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Mozilla

References (14)

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2780.html
Third Party Advisory http://www.securityfocus.com/bid/94336
Third Party Advisory http://www.securitytracker.com/id/1037298
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1303418
Third Party Advisory https://security.gentoo.org/glsa/201701-15
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2016-89/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2016-90/
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2780.html
Third Party Advisory http://www.securityfocus.com/bid/94336
Third Party Advisory http://www.securitytracker.com/id/1037298
Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1303418
Third Party Advisory https://security.gentoo.org/glsa/201701-15
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2016-89/
Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2016-90/
24
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal