Input validation error in OpenBSD - #VU108514
Published: May 5, 2025
Vulnerability identifier: #VU108514
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the nfsrv_readdir() and nfsrv_readdirplus() functions in sys/nfs/nfs_serv.c in nfsd(8). A remote user can send a specially crafted NFS request to the server and perform a denial of service (DoS) attack.
Affected software
OpenBSD
Remediation
Install updates from vendor's website.