CVE-2017-7794

Public Exploit

Description

On Linux systems, if the content process is compromised, the sandbox broker will allow files to be truncated even though the sandbox explicitly only has read access to the local file system and no write permissions. Note: This attack only affects the Linux operating system. Other operating systems are not affected. This vulnerability affects Firefox < 55.

Category

7.8
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1374281 issue tracking exploit vendor advisory
https://www.mozilla.org/security/advisories/mfsa2017-18/ vendor advisory
http://www.securitytracker.com/id/1039124 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2017-7794?
CVE-2017-7794 has been scored as a high severity vulnerability.
How to fix CVE-2017-7794?
To fix CVE-2017-7794, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-7794 being actively exploited in the wild?
It is possible that CVE-2017-7794 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-7794?
CVE-2017-7794 affects Mozilla Firefox.
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