Bug 1473622 - (CVE-2017-7539) CVE-2017-7539 Qemu: qemu-nbd crashes due to undefined I/O coroutine
CVE-2017-7539 Qemu: qemu-nbd crashes due to undefined I/O coroutine
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=20170602,repor...
: Security
Depends On: 1467509 1473624 1473625 1473627 1473628 1473629 1473630 1473631 1473632 1473633 1473634 1473638
Blocks: 1472118
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Reported: 2017-07-21 06:31 EDT by Prasad J Pandit
Modified: 2017-07-21 09:12 EDT (History)
40 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
It was found that during initial connection negotiation, the Network Block Device (NBD) Server did not have I/O co-routine defined. This could crash the qemu-nbd server if a client sent undue data during connection negotiation. A remote user/process could use this flaw to crash the qemu-nbd server resulting in DoS.
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Description Prasad J Pandit 2017-07-21 06:31:30 EDT
Quick Emulator(Qemu) built with the Network Block Device(NBD) Server support
is vulnerable to a crash via assertion failure. It could occur if a client sent
undue data during initial connection negotiation.

A remote user/process could use this flaw to crash the qemu-nbd server
resulting in DoS.

Upstream patch:
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  -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b

Introduced by:
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  -> http://git.qemu.org/?p=qemu.git;a=commitdiff;h=ff82911cd3f69f028f2537825c9720ff78bc3f19

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/07/21/4
Comment 1 Prasad J Pandit 2017-07-21 06:33:16 EDT
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1473625]
Comment 2 Prasad J Pandit 2017-07-21 06:33:41 EDT
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1473624]

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