5 ms·

See ya later uptime... 04:49:58 up 659 days

rgbrenner 12y ago
See ya later uptime... 04:49:58 up 659 days your server is vulnerable to a number of Xen security vulnerabilities: http://xenbits.xen.org/xsa/ http://xenbits.xen.org/xsa/ Including this one from Oct 1, 2014 that allows guests to read up to 3KB of memory from the hypervisor or other guests: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7188 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7188 http://threatpost.com/serious-hypervisor-bug-fix-causes-unexpected-cloud-downtime/108660 http://threatpost.com/serious-hypervisor-bug-fix-causes-unex...
- singlow 12y ago
  Yeah. I had one server with over 900 days prior to Oct. It probably should have been rebooted for other reasons but thats the one that forced it.
- mnordhoff 12y ago
  That vulnerability only applies to HVM guests. No doubt there are other reasons to have rebooted since 2013, but if one of Rackspace's servers only has paravirtualized guests (do they use HVM at all? I don't know), they can get by without patching it.
  - deleted 12y ago
    [deleted]
  - rgbrenner 12y ago
    Did you see how many vulnerabilities 659 days covers? I mean, if that one doesn't apply, just go back a bit. How about this one from June 2014: memory pages that were in use by the hypervisor and are eligible to be allocated to guests weren't being properly cleaned. Such exposure of information would happen through memory pages freshly allocated to or by the guest. ... it is possible for an attacker to obtain modest amounts of in-flight and in-use data, which might contain passwords or cryptographic keys. http://xenbits.xen.org/xsa/advisory-100.html http://xenbits.xen.org/xsa/advisory-100.html
  - kbar13 12y ago
    rackspace most likely uses hvm guests. I think they had freebsd before there was xen pv support
    - yclept 12y ago
      Rackspace has both HV and PV for most default linux images
zatkin 12y ago
Ouch! Might I ask what datacentre you're using?
- spaam 12y ago
  i had something similar at linode london.
e12e 12y ago
Is that a guest or a host? If it's a guest, there shouldn't be a need for reboot, only suspend/resume... (note that a reboot can be a good idea from time to time, just to make sure the current configuration (eg: post kernel upgrades, before reboot) -- actually boots).

See ya later uptime... 04:49:58 up 659 days your server is vulnerable to a number of Xen security vulnerabilities: http://xenbits.xen.org/xsa/ http://xenbits.xen.org/xsa/ Including this one from Oct 1, 2014 that allows guests to read up to 3KB of memory from the hypervisor or other guests: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7188 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7188 http://threatpost.com/serious-hypervisor-bug-fix-causes-unexpected-cloud-downtime/108660 http://threatpost.com/serious-hypervisor-bug-fix-causes-unex...

singlow 12y ago
Yeah. I had one server with over 900 days prior to Oct. It probably should have been rebooted for other reasons but thats the one that forced it.
mnordhoff 12y ago
That vulnerability only applies to HVM guests. No doubt there are other reasons to have rebooted since 2013, but if one of Rackspace's servers only has paravirtualized guests (do they use HVM at all? I don't know), they can get by without patching it.
- deleted 12y ago
  [deleted]
- rgbrenner 12y ago
  Did you see how many vulnerabilities 659 days covers? I mean, if that one doesn't apply, just go back a bit. How about this one from June 2014: memory pages that were in use by the hypervisor and are eligible to be allocated to guests weren't being properly cleaned. Such exposure of information would happen through memory pages freshly allocated to or by the guest. ... it is possible for an attacker to obtain modest amounts of in-flight and in-use data, which might contain passwords or cryptographic keys. http://xenbits.xen.org/xsa/advisory-100.html http://xenbits.xen.org/xsa/advisory-100.html
- kbar13 12y ago
  rackspace most likely uses hvm guests. I think they had freebsd before there was xen pv support
  - yclept 12y ago
    Rackspace has both HV and PV for most default linux images

zatkin 12y ago

Ouch! Might I ask what datacentre you're using?

spaam 12y ago
i had something similar at linode london.

e12e 12y ago

Is that a guest or a host? If it's a guest, there shouldn't be a need for reboot, only suspend/resume... (note that a reboot can be a good idea from time to time, just to make sure the current configuration (eg: post kernel upgrades, before reboot) -- actually boots).