Rule Category

PROTOCOL-RPC -- Snort has detected traffic that may indicate the presence of the rpc protocol or vulnerabilities in the rpc protocol on the network.

Alert Message

PROTOCOL-RPC portmap pcnfsd request UDP

Rule Explanation

pcnfsd (aka rpc.pcnfsd) allows local users to change file permissions, or execute arbitrary commands through arguments in the RPC call. Impact: CVSS base score 1.9 CVSS impact score 2.9 CVSS exploitability score 3.4 confidentialityImpact PARTIAL integrityImpact NONE availabilityImpact NONE Details: Ease of Attack:

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Talos research team. This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology. For more information see [nvd].

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Rule Vulnerability

CVE Additional Information

CVE-1999-0078
pcnfsd (aka rpc.pcnfsd) allows local users to change file permissions, or execute arbitrary commands through arguments in the RPC call.
Details
SeverityLOW Base Score1.9
Impact Score2.9 Exploit Score3.4
Confidentiality ImpactPARTIAL Integrity ImpactNONE
Availability ImpactNONE Access Vector
AuthenticationNONE Ease of Access
CVE-1999-0353
rpc.pcnfsd in HP gives remote root access by changing the permissions on the main printer spool directory.
Details
SeverityHIGH Base Score9.3
Impact Score10.0 Exploit Score8.6
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationNONE Ease of Access
CVE-2002-0910
Buffer overflows in netstd 3.07-17 package allows remote DNS servers to execute arbitrary code via a long FQDN reply, as observed in the utilities (1) linux-ftpd, (2) pcnfsd, (3) tftp, (4) traceroute, or (5) from/to.
Details
SeverityHIGH Base Score7.5
Impact Score6.4 Exploit Score10.0
Confidentiality ImpactPARTIAL Integrity ImpactPARTIAL
Availability ImpactPARTIAL Access Vector
AuthenticationNONE Ease of Access