PT-2019-5701 · Linux+3 · Nfs-Utils+3
Malte Kraus
·
Publicado
2019-09-17
·
Atualizado
2024-06-15
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CVE-2019-3689
CVSS v2.0
10
Alta
| Vetor | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
nfs-utils versions prior to 1.3.0-34.18.1
nfs-utils versions prior to 2.1.1-6.10.2
Description
The issue is related to the incorrect assignment of standard permissions in the
nsm drop privileges function of the nfs-utils package. This can allow a remote attacker to access confidential data, compromise its integrity, and trick processes running with root privileges into creating or overwriting files anywhere on the system. The directory /var/lib/nfs is owned by statd:nogroup and contains files owned and managed by root, which can be exploited if statd is compromised.Recommendations
For versions prior to 1.3.0-34.18.1, update to a version later than 1.3.0-34.18.1 to resolve the issue.
For versions prior to 2.1.1-6.10.2, update to a version later than 2.1.1-6.10.2 to resolve the issue.
As a temporary workaround, consider restricting access to the
/var/lib/nfs directory to minimize the risk of exploitation.Correção
Incorrect Default Permissions
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Identificadores relacionados
Produtos afetados
Linuxmint
Suse
Ubuntu
Nfs-Utils