Bug 1414304 – CVE-2017-0386 libnl: Privilege escalation due to insufficient data checks in nla_reserve and nla_put

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Bug 1414304 - (CVE-2017-0386) CVE-2017-0386 libnl: Privilege escalation due to insufficient data checks in nla_reserve and nla_put

Summary:	CVE-2017-0386 libnl: Privilege escalation due to insufficient data checks in ...

Status:	CLOSED WONTFIX

Aliases:	CVE-2017-0386

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

Priority	low Severity low
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20161201,reported=2...
Keywords:	Security

Depends On:	1414305
Blocks:	1414309
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Reported:	2017-01-18 04:32 EST by Andrej Nemec
Modified:	2017-01-19 07:56 EST (History)
CC List:	7 users (show)

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Last Closed:	2017-01-18 20:11:46 EST
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Description Andrej Nemec 2017-01-18 04:32:58 EST

An elevation of privilege vulnerability in the libnl library could enable a
local malicious application to execute arbitrary code within the context of a
privileged process.

References:

https://android.googlesource.com/platform/external/libnl/+/f0b40192efd1af977564ed6335d42a8bbdaf650a
https://github.com/thom311/libnl/issues/124

Comment 1 Andrej Nemec 2017-01-18 04:33:24 EST

Created libnl3 tracking bugs for this issue:

Affects: fedora-all [bug 1414305]

Comment 2 Doran Moppert 2017-01-18 20:05:07 EST

This CVE seems to be specific to Android's usage of (its fork of) libnl, allowing calls into libnl to cross process (and therefore privilege) boundaries.

On Fedora and Enterprise Linux, libnl inherits the privilege domain of the process which opens it (through dynamic linking or dlopen()) .. like any other shared library.  Thus, this does not represent a security vulnerability.

The same conclusion has been reached on the upstream ticket:

https://github.com/thom311/libnl/issues/124

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