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Bug 1610552 - (CVE-2018-15470) CVE-2018-15470 xen: oxenstored does not apply quota-maxentity (XSA-272)
CVE-2018-15470 xen: oxenstored does not apply quota-maxentity (XSA-272)
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=20180814:1700,...
: Security
Depends On: 1616080
Blocks: 1610553
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Reported: 2018-07-31 17:59 EDT by Laura Pardo
Modified: 2018-10-09 08:05 EDT (History)
13 users (show)

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Last Closed: 2018-10-09 08:05:01 EDT
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Description Laura Pardo 2018-07-31 17:59:42 EDT 
A flaw was found in xen. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. The order of evaluation of subexpressions is not specified. This allows a malicious or buggy guest to write as many xenstore entriesas it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.
Comment 1 Laura Pardo 2018-08-14 17:52:09 EDT 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1616080]
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