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Bug 1581013 - (CVE-2018-10839) CVE-2018-10839 Qemu: ne2000: integer overflow leads to buffer overflow issue
CVE-2018-10839 Qemu: ne2000: integer overflow leads to buffer overflow issue
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=20180926,repor...
: Security
: 1613562 (view as bug list)
Depends On: 1636413 1636414 1636415 1636416 1636417 1636418 1636419 1636420 1636421 1636422 1636428 1636429 1636430
Blocks: 1581014 1613563
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Reported: 2018-05-21 21:02 EDT by Sam Fowler
Modified: 2018-10-09 09:33 EDT (History)
45 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
An integer overflow issue was found in the NE200 NIC emulation. It could occur while receiving packets from the network, if the size value was greater than INT_MAX. Such overflow would lead to stack buffer overflow issue. A user inside guest could use this flaw to crash the QEMU process, resulting in DoS scenario.
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Description Sam Fowler 2018-05-21 21:02:31 EDT 
Qemu emulator built with the NE2000 NIC emulation support is vulnerable to an integer overflow, which could lead to buffer overflow issue. It could occur when receiving packets over the network.

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/msg03273.html

Reference:
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  -> https://www.openwall.com/lists/oss-security/2018/10/08/1
Comment 3 Sam Fowler 2018-07-24 21:28:53 EDT 
Acknowledgments:

Name: Daniel Shapira (Twistlock), Arash Tohidi
Comment 6 Prasad J Pandit 2018-10-05 07:11:58 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1636429]


Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1636428]
Comment 8 Prasad J Pandit 2018-10-08 00:35:15 EDT 
*** Bug 1613562 has been marked as a duplicate of this bug. ***
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