SB2025050506 - Remote denial of service in OpenBSD nfsd
Published: May 5, 2025
Security Bulletin ID
SB2025050506
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: N/A)
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.
Remediation
Install update from vendor's website.