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Bug 1636777 - (CVE-2018-17963) CVE-2018-17963 QEMU: net: ignore packets with large size
CVE-2018-17963 QEMU: net: ignore packets with large size
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=20180521,repor...
: Security
Depends On: 1636778 1636779 1636780 1636781 1636782 1636783 1636784 1636785 1636786 1636787 1636788 1636789 1636790
Blocks: 1581014
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Reported: 2018-10-07 11:51 EDT by Prasad J Pandit
Modified: 2018-10-09 11:44 EDT (History)
32 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A potential integer overflow issue was found in the networking back-end of QEMU. It could occur while receiving packets, because it accepted packets with large size value. Such overflow could lead to OOB buffer access issue. A user inside guest could use this flaw to crash the QEMU process resulting in DoS.
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Description Prasad J Pandit 2018-10-07 11:51:22 EDT 
A potential integer overflow issue was found in the QEMU emulator. It could occur when a packet with large packet size is accepted and processed.
A user inside guest could use this flaw to crash the Qemu process resulting in DoS.

Upstream fix:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03267.html

Reference:
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  -> https://www.openwall.com/lists/oss-security/2018/10/08/1
Comment 1 Prasad J Pandit 2018-10-07 11:51:25 EDT 
Acknowledgments:

Name: Daniel Shapira (Twistlock)
Comment 2 Prasad J Pandit 2018-10-07 11:59:21 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1636782]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1636783]
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