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Mandriva Linux Security Advisory 2015-210

Mandriva Linux Security Advisory 2015-210
Posted Apr 27, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-210 - A denial of service flaw was found in the way QEMU handled malformed Physical Region Descriptor Table data sent to the host's IDE and/or AHCI controller emulation. A privileged guest user could use this flaw to crash the system. It was found that the QEMU's websocket frame decoder processed incoming frames without limiting resources used to process the header and the payload. An attacker able to access a guest's VNC console could use this flaw to trigger a denial of service on the host by exhausting all available memory and CPU.

tags | advisory, denial of service
systems | linux, mandriva
advisories | CVE-2015-1779
MD5 | 6ec0b19e4dc7cfc8ec41a92df9f2fd1c

Mandriva Linux Security Advisory 2015-210

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2015:210
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : qemu
Date : April 27, 2015
Affected: Business Server 1.0, Business Server 2.0
_______________________________________________________________________

Problem Description:

Updated qemu packages fix security vulnerabilities:

A denial of service flaw was found in the way QEMU handled malformed
Physical Region Descriptor Table (PRDT) data sent to the host's IDE
and/or AHCI controller emulation. A privileged guest user could use
this flaw to crash the system (rhbz#1204919).

It was found that the QEMU's websocket frame decoder processed incoming
frames without limiting resources used to process the header and the
payload. An attacker able to access a guest's VNC console could use
this flaw to trigger a denial of service on the host by exhausting
all available memory and CPU (CVE-2015-1779).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1779
http://advisories.mageia.org/MGASA-2015-0149.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
bc2beef4372b8b5e6f304b43ea03932e mbs1/x86_64/qemu-1.6.2-1.3.mbs1.x86_64.rpm
66b90d7aa493a9d5a4f211348fc3f11e mbs1/x86_64/qemu-img-1.6.2-1.3.mbs1.x86_64.rpm
963f9b67a4f17912f78a2f836eff5779 mbs1/SRPMS/qemu-1.6.2-1.3.mbs1.src.rpm

Mandriva Business Server 2/X86_64:
50ec69a06c81554133e2b6498f80aadd mbs2/x86_64/qemu-1.6.2-1.1.mbs2.x86_64.rpm
3614812ed41087f722183a335dcf1085 mbs2/x86_64/qemu-img-1.6.2-1.1.mbs2.x86_64.rpm
59781eb204137b664c40b646638259f9 mbs2/SRPMS/qemu-1.6.2-1.1.mbs2.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/en/support/security/advisories/

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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=C7sG
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