The remote SUSE host is missing one or more security updates.
Xen was updated to fix two security issues : CVE-2015-3456: A buffer overflow in the floppy drive emulation, which could be used to carry out denial of service attacks or potential code execution against the host. This vulnerability is also known as VENOM. CVE-2015-3340: An information leak through XEN_DOMCTL_gettscinfo(). (XSA-132) 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.
To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product : SUSE Linux Enterprise Server 11 SP1 LTSS : zypper in -t patch slessp1-xen=10684 To bring your system up-to-date, use 'zypper patch'.