Bug 1610552 (CVE-2018-15470) - CVE-2018-15470 xen: oxenstored does not apply quota-maxentity (XSA-272)
Summary: CVE-2018-15470 xen: oxenstored does not apply quota-maxentity (XSA-272)
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-15470
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1616080
Blocks: 1610553
TreeView+ depends on / blocked
 
Reported: 2018-07-31 21:59 UTC by Laura Pardo
Modified: 2019-09-29 14:46 UTC (History)
13 users (show)

Fixed In Version:
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Last Closed: 2018-10-09 12:05:01 UTC
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Description Laura Pardo 2018-07-31 21:59:42 UTC 
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 21:52:09 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1616080]
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