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Bug 1439662 - (CVE-2017-5950) CVE-2017-5950 yaml-cpp: Stack overflow in HandleNode()
CVE-2017-5950 yaml-cpp: Stack overflow in HandleNode()
Status: NEW
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=20170117,repor...
: Security
Depends On: 1439675 1439676 1439679 1439677 1439678 1469879
Blocks: 1439664
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Reported: 2017-04-06 07:41 EDT by Andrej Nemec
Modified: 2018-02-07 09:45 EST (History)
26 users (show)

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Description Andrej Nemec 2017-04-06 07:41:37 EDT 
The SingleDocParser::HandleNode function yaml-cpp does not limit the maximum recursion to a suitable amount. Remote attackers to cause a denial of service (stack consumption and application crash) via a crafted YAML file.

Upstream bug:

https://github.com/jbeder/yaml-cpp/issues/459
Comment 1 Andrej Nemec 2017-04-06 07:56:22 EDT 
Created yaml-cpp tracking bugs for this issue:

Affects: epel-6 [bug 1439678]
Affects: epel-7 [bug 1439676]
Affects: fedora-all [bug 1439677]


Created yaml-cpp03 tracking bugs for this issue:

Affects: epel-7 [bug 1439679]
Affects: fedora-all [bug 1439675]
Comment 2 Stefan Cornelius 2017-06-29 10:57:49 EDT 
It seems like MongoDB uses yaml for configuration files only, which is hardly a reasonable attack vector. Thus, I don't think that this yaml-cpp issue is a problem in a MongoDB context.
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