Vulnerability Details : CVE-2017-7796
On Windows systems, the logger run by the Windows updater deletes the file "update.log" before it runs in order to write a new log of that name. The path to this file is supplied at the command line to the updater and could be used in concert with another local exploit to delete a different file named "update.log" instead of the one intended. Note: This attack only affects Windows operating systems. Other operating systems are not affected. This vulnerability affects Firefox < 55.
Vulnerability category: Input validation
Products affected by CVE-2017-7796
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-7796
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 18 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-7796
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.3
|
LOW | AV:L/AC:M/Au:N/C:N/I:P/A:P |
3.4
|
4.9
|
NIST | |
|
4.7
|
MEDIUM | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2017-7796
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-7796
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1234401
1234401 - (CVE-2017-7796) Update logger can delete arbitrary files with the name "update.log"Issue Tracking;Patch;Vendor Advisory
-
https://www.mozilla.org/security/advisories/mfsa2017-18/
Security vulnerabilities fixed in Firefox 55 — MozillaVendor Advisory
-
http://www.securitytracker.com/id/1039124
Mozilla Firefox Multiple Bugs Let Remote Users Spoof Content, Obtain Potentially Sensitive Information, Deny Service and Execute Arbitrary Code - SecurityTrackerThird Party Advisory;VDB Entry
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