Detections
Analytics
SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2015:0747-1)
high Nessus Plugin ID 83720
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Synopsis
The remote SUSE host is missing one or more security updates.Description
The Virtualization service XEN was updated to fix various bugs and security issues.The following security issues have been fixed :
CVE-2015-2756: XSA-126: Unmediated PCI command register access in qemu could have lead to denial of service attacks against the host, if PCI cards are passed through to guests.
XSA-125: Long latency MMIO mapping operations were not preemptible.
CVE-2015-2151: XSA-123: Instructions with register operands ignored eventual segment overrides encoded for them. Due to an insufficiently conditional assignment such a bogus segment override could have, however, corrupted a pointer used subsequently to store the result of the instruction.
CVE-2015-2045: XSA-122: The code handling certain sub-operations of the HYPERVISOR_xen_version hypercall failed to fully initialize all fields of structures subsequently copied back to guest memory. Due to this hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest.
CVE-2015-2044: XSA-121: Emulation routines in the hypervisor dealing with certain system devices checked whether the access size by the guest is a supported one. When the access size is unsupported these routines failed to set the data to be returned to the guest for read accesses, so that hypervisor stack contents were copied into the destination of the operation, thus becoming visible to the guest.
Also fixed :
Fully virtualized guest install from network source failed with 'cannot find guest domain' in XEN. (bsc#919341)
Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
To install this SUSE Security Update use YaST online_update.Alternatively you can run the command listed for your product :
SUSE Linux Enterprise Software Development Kit 11 SP3 :
zypper in -t patch sdksp3-xen-201503=10560
SUSE Linux Enterprise Server 11 SP3 :
zypper in -t patch slessp3-xen-201503=10560
SUSE Linux Enterprise Desktop 11 SP3 :
zypper in -t patch sledsp3-xen-201503=10560
To bring your system up-to-date, use 'zypper patch'.
See Also
Plugin Details
Severity: High
ID: 83720
File Name: suse_SU-2015-0747-1.nasl
Version: 2.8
Type: local
Agent: unix
Family: SuSE Local Security Checks
Published: 5/20/2015
Updated: 1/6/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: p-cpe:/a:novell:suse_linux:xen-doc-pdf, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-kmp-default, p-cpe:/a:novell:suse_linux:xen-tools-domu, p-cpe:/a:novell:suse_linux:xen, cpe:/o:novell:suse_linux:11, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-kmp-pae, p-cpe:/a:novell:suse_linux:xen-doc-html
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 4/21/2015
Vulnerability Publication Date: 3/12/2015
Reference Information
CVE: CVE-2015-2044, CVE-2015-2045, CVE-2015-2151, CVE-2015-2756