Security readout for executives and security teams
Plain-English summary
This entry flags that the rpc.sprayd service is running on a system. Sprayd is a legacy Unix RPC daemon used to test network throughput by generating packet floods. Leaving it enabled exposes the host to abuse where attackers can direct sprayd to flood other systems, wasting bandwidth and enabling denial-of-service style traffic. It is a configuration/exposure finding rather than a code flaw.
Executive priority
Low priority. This is a legacy configuration hygiene item, not an active threat. Address it during routine hardening reviews of any remaining legacy Unix systems; no emergency action is warranted based on the cited sources.
Technical view
CVE-1999-0613 records the presence of the rpc.sprayd RPC service. sprayd responds to spray requests by sending streams of packets to a target, historically used for network diagnostics. Because it can be invoked remotely via portmap/RPC and directed at arbitrary destinations, it can be abused as a traffic amplifier or reflector. The CVE contains no vendor, version, CWE, CVSS, or patch data; it is a hardening/exposure baseline entry from the original CVE inventory.
Likely exposure
Legacy Unix and Solaris-era systems that still expose RPC services (portmap/rpcbind) on reachable networks. Very unlikely on modern, hardened, or cloud-native infrastructure, but possible on long-lived internal servers, appliances, or lab hosts where default RPC services were never disabled.
Exploitation context
Not listed in CISA KEV and no cited source indicates active exploitation. The finding is a configuration hygiene issue; risk is limited to bandwidth abuse and reconnaissance rather than direct code execution or data theft. No exploit disclosure is referenced in the provided sources.
Researcher notes
Source bundle is minimal: no CWE, CVSS, affected products, or patch references beyond the CVE record itself. Treat this as a scanner-style exposure finding rather than a discrete vulnerability. Historical context (sprayd as a diagnostic RPC service prone to abuse) is not confirmed by the cited bundle and should be validated against vendor Unix documentation before publication.
Mitigation direction
- Disable rpc.sprayd on any host where it is not required for diagnostics.
- Restrict portmap/rpcbind and RPC service exposure at the network boundary.
- Retire or segment legacy Unix hosts that still run unused RPC daemons.
- Follow vendor Unix hardening guidance for RPC services if no patch applies.
Validation and detection
- Enumerate RPC services with rpcinfo to confirm whether sprayd is registered.
- Check inetd, xinetd, or SMF service manifests for sprayd entries.
- Verify firewall rules block inbound RPC ports from untrusted networks.
- Confirm portmap/rpcbind is either disabled or bound to trusted interfaces only.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CVE-1999-0613 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cve.org/CVERecord?id=CVE-1999-0613CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.