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CVE-2010-2238

Publication date 19 August 2010

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Red Hat libvirt, possibly 0.7.2 through 0.8.2, recurses into disk-image backing stores without extracting the defined disk backing-store format, which might allow guest OS users to read arbitrary files on the host OS, and possibly have unspecified other impact, via unknown vectors.

Read the notes from the security team

Status

Package Ubuntu Release Status
libvirt 10.10 maverick
Fixed 0.8.3-1ubuntu8
10.04 LTS lucid
Fixed 0.7.5-5ubuntu27.5
9.10 karmic
Not affected
9.04 jaunty
Not affected
8.04 LTS hardy
Not affected
6.06 LTS dapper Not in release

Notes

jdstrand

AppArmor in Ubuntu 10.04 should mostly protect the host OS, but an attacker in a virtual machine may be able to access files of another machine. upstream patch is highly intrusive, needs rewriting for all affected releases, requires a conffile change and a migration helper. Ubuntu 10.04 LTS is the first release to probe the backing stores the changes for CVE-2010-2238 introduced LP: #665531. Upstream has stated that "<driver name='qemu' type='host_device'/>" was only accidentally supported and that they do not intend to fix it. Since this used to work on 10.04 LTS and a number of people were affected, a fix will be issued for 10.04 LTS only. Libvirt 0.8.3 (in Ubuntu 10.10) will not support specifying type='host_device'. The discussion can be seen on the libvirt mailing.

References

Related Ubuntu Security Notices (USN)

    • USN-1008-1
    • libvirt vulnerabilities
    • 21 October 2010

Other references