Security Bulletin
This security bulletin contains one high risk vulnerability.
EUVDB-ID: #VU32432
Risk: High
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2015-1779
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to a crash the entire system.
The VNC websocket frame decoder in QEMU allows remote attackers to cause a denial of service (memory and CPU consumption) via a large (1) websocket payload or (2) HTTP headers section.
MitigationInstall update from vendor's website.
Vulnerable software versionsQEMU: 3.1.3
CPE2.3 External linkshttps://lists.fedoraproject.org/pipermail/package-announce/2015-April/154656.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-April/155196.html
https://lists.opensuse.org/opensuse-security-announce/2015-05/msg00033.html
https://lists.opensuse.org/opensuse-security-announce/2015-05/msg00042.html
https://rhn.redhat.com/errata/RHSA-2015-1931.html
https://rhn.redhat.com/errata/RHSA-2015-1943.html
https://www.debian.org/security/2015/dsa-3259
https://www.openwall.com/lists/oss-security/2015/03/24/9
https://www.openwall.com/lists/oss-security/2015/04/09/6
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
https://www.securityfocus.com/bid/73303
https://www.securitytracker.com/id/1033975
https://www.ubuntu.com/usn/USN-2608-1
https://lists.gnu.org/archive/html/qemu-devel/2015-03/msg04894.html
https://lists.gnu.org/archive/html/qemu-devel/2015-03/msg04895.html
https://lists.gnu.org/archive/html/qemu-devel/2015-03/msg04896.html
https://security.gentoo.org/glsa/201602-01
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to trick the victim to open a a specially crafted file.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.