nfs-utils: root-owned files stored in insecure /var/lib/nfs directory
Vulnerability Description
The nfs-utils package in SUSE Linux Enterprise Server 12 before and including version 1.3.0-34.18.1 and in SUSE Linux Enterprise Server 15 before and including version 2.1.1-6.10.2 the directory /var/lib/nfs is owned by statd:nogroup. This directory contains files owned and managed by root. If statd is compromised, it can therefore trick processes running with root privileges into creating/overwriting files anywhere on the system.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Malte Kraus of SUSE
References
- https://bugzilla.suse.com/show_bug.cgi?id=1150733
- https://lists.debian.org/debian-lts-announce/2019/10/msg00026.html
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00071.html
- http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00006.html
- https://git.linux-nfs.org/?p=steved/nfs-utils.git%3Ba=commitdiff%3Bh=fee2cc29e888f2ced6a76990923aef19d326dc0e
- https://usn.ubuntu.com/4400-1/
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