[Pkg-libvirt-maintainers] Bug#926418: libvirt: CVE-2019-3886: virsh domhostname command discloses guest hostname in readonly mode

[Salvatore Bonaccorso]

Source: libvirt
Version: 5.0.0-1
Severity: important
Tags: security upstream
Forwarded: https://www.redhat.com/archives/libvir-list/2019-April/msg00339.html

Hi,

The following vulnerability was published for libvirt.

CVE-2019-3886[0]:
| An incorrect permissions check was discovered in libvirt 4.8.0 and
| above. The readonly permission was allowed to invoke APIs depending on
| the guest agent, which could lead to potentially disclosing unintended
| information or denial of service by causing libvirt to block.

I'm filling it here as well for ruther investigation. Is this only
affecting versions >= 4.8.0?

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2019-3886
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3886
[1] https://www.redhat.com/archives/libvir-list/2019-April/msg00339.html
[2] https://bugzilla.redhat.com/show_bug.cgi?id=1694880

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore