Bug 1479211 – CVE-2017-7794 Mozilla: Linux file truncation via sandbox broker (MFSA 2017-18)

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Bug 1479211 - (CVE-2017-7794) CVE-2017-7794 Mozilla: Linux file truncation via sandbox broker (MFSA 2017-18)

Summary:	CVE-2017-7794 Mozilla: Linux file truncation via sandbox broker (MFSA 2017-18)

Status:	CLOSED NOTABUG

Aliases:	CVE-2017-7794

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	impact=moderate,public=20170808,repor...
Keywords:	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)
CC List:	3 users (show)

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Last Closed:	2017-08-08 21:14:53 EDT
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RHEL 7.3 requirements from Atomic Host:
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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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