vulnwire
7.8high

CVE-2017-7760

The Mozilla Windows updater modifies some files to be updated by reading the original file and applying changes to it.

Published 8 y ago · modified 4 mo ago · JSON

CVSS
7.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 34%
Public exploits
0
none known

The Mozilla Windows updater modifies some files to be updated by reading the original file and applying changes to it. The location of the original file can be altered by a malicious user by passing a special path to the callback parameter through the Mozilla Maintenance Service, allowing the manipulation of files in the installation directory and privilege escalation by manipulating 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.

Exploit prediction (EPSS)

0.40% probability of exploitation in the next 30 days, higher than 34% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.07.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD2.04.6AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Mozilla Firefox ESR
  • Mozilla Firefox

Classification

Weakness
  • CWE-417 Communication Channel Errors

References

  • securityfocus.com /bid/99057 · vdb-entry, x_refsource_BID, x_transferred
  • mozilla.org /security/advisories/mfsa2017-15/ · x_refsource_CONFIRM, x_transferred
  • securitytracker.com /id/1038689 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • bugzilla.mozilla.org /show_bug.cgi?id=1348645 · x_refsource_CONFIRM, x_transferred
  • mozilla.org /security/advisories/mfsa2017-16/ · x_refsource_CONFIRM, x_transferred

Sources

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