Vulnerability CVE-2019-12779
Published: 2019-06-07

Description:
libqb before 1.0.5 allows local users to overwrite arbitrary files via a symlink attack, because it uses predictable filenames (under /dev/shm and /tmp) without O_EXCL.

Type:

CWE-59

 (Improper Link Resolution Before File Access ('Link Following'))

CVSS2 => (AV:L/AC:L/Au:N/C:N/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.6/10
9.2/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
Complete
Complete
Affected software
Clusterlabs -> Libqb 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00017.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00027.html
http://www.securityfocus.com/bid/108691
https://bugzilla.redhat.com/show_bug.cgi?id=1695948
https://github.com/ClusterLabs/libqb/issues/338
https://github.com/ClusterLabs/libqb/releases/tag/v1.0.4
https://github.com/ClusterLabs/libqb/releases/tag/v1.0.5
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