Bug 1479211 - (CVE-2017-7794) CVE-2017-7794 Mozilla: Linux file truncation via sandbox broker (MFSA 2017-18)
CVE-2017-7794 Mozilla: Linux file truncation via sandbox broker (MFSA 2017-18)
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20170808,repor...
: Security
Depends On:
Blocks: 1477026
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Reported: 2017-08-08 02:47 EDT by Doran Moppert
Modified: 2017-08-24 03:35 EDT (History)
3 users (show)

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Last Closed: 2017-08-08 21:14:53 EDT
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Description Doran Moppert 2017-08-08 02:47:34 EDT
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.


External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-18/#CVE-2017-7794


Acknowledgements:

Name: the Mozilla project
Upstream: Jann Horn

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