What’s Vulnerable › Vulnerabilities

CVE-2019-12779

• Severity: high (CVSS 7.1 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-06-07 · updated 2026-06-17
• Weakness: CWE-59

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.

Affected products

• ClusterLabs Libqb: before 1.0.5 — fixed in 1.0.5

How to fix

Upgrade to a fixed version: ClusterLabs Libqb 1.0.5. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00027.html
• http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00031.html
• http://www.securityfocus.com/bid/108691
• https://access.redhat.com/errata/RHSA-2019:3610
• 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
• https://security.gentoo.org/glsa/202107-03
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00017.html
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00027.html

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