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CVE Record

CVE-2003-0857: The (1) ipq_read and (2) ipulog_read functions in iptables allow local users to cause a denial of service b...

The (1) ipq_read and (2) ipulog_read functions in iptables allow local users to cause a denial of service by sending spoofed messages as other users to the kernel netlink interface.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is an old local denial-of-service issue involving iptables message handling. A person who already has local access could send spoofed netlink messages and potentially disrupt affected packet queue or logging behavior. The source bundle does not identify affected versions, a CVSS score, or a confirmed patch.

Executive priority

Treat this as a legacy local availability risk requiring inventory confirmation, not an emergency internet-wide exposure based on the provided evidence. Prioritize systems with untrusted local users, shared hosting, or legacy Linux distributions.

Technical view

CVE-2003-0857 covers ipq_read and ipulog_read in iptables. The described flaw lets local users send spoofed messages as other users to the kernel netlink interface, causing denial of service. The provided affected-product data is unspecified, so version-level exposure cannot be determined from this bundle alone.

Likely exposure

Exposure is most plausible on Linux systems using vulnerable iptables components, especially packet queue or ULOG-related netlink handling. The bundle lists affected vendor, product, and versions as n/a, so vulnerability managers must confirm applicability through distribution-specific advisories and package metadata.

Exploitation context

The CVE describes a local-user denial-of-service scenario. There is no KEV listing and no provided source claiming active exploitation. The bundle does not describe remote exploitation, privilege escalation, data theft, or exploit availability.

Researcher notes

Key gaps are affected versions, fixed versions, and vendor remediation details. The Red Hat Bugzilla reference may contain distribution context, but the supplied bundle only provides its URL. Do not infer broader product impact without vendor-specific confirmation.

Mitigation direction

  • Check OS vendor advisories for iptables updates referencing CVE-2003-0857.
  • Apply vendor-supported iptables or kernel package updates where applicable.
  • Restrict local interactive access to trusted users where feasible.
  • Document compensating controls for legacy systems pending vendor confirmation.
  • Avoid unverified configuration changes unless vendor guidance supports them.

Validation and detection

  • Inventory Linux hosts with iptables installed or enabled.
  • Identify systems using packet queue or ULOG-related netlink functionality.
  • Compare installed package versions against distribution advisories for this CVE.
  • Confirm whether untrusted users have local shell or workload execution access.
  • Review operational logs for unexplained iptables queue or logging disruption.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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-2003-0857 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.