CVE-2008-3259: n/a vulnerability

CVE-2008-3259: OpenSSH before 5.1 sets the SO_REUSEADDR socket option when the X11UseLocalhost configuration setting is di...

OpenSSH before 5.1 sets the SO_REUSEADDR socket option when the X11UseLocalhost configuration setting is disabled, which allows local users on some platforms to hijack the X11 forwarding port via a bind to a single IP address, as demonstrated on the HP-UX platform.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 09:28 UTC (UTC+00:00)

Security readout for executives and security teams

This issue affects OpenSSH before 5.1 when X11 forwarding is configured with X11UseLocalhost disabled. On some platforms, a local user could take over the X11 forwarding port, potentially exposing graphical session traffic. It is configuration-dependent and local-user scoped, not a broad remote internet exposure. Exposure is most likely on legacy systems running OpenSSH before 5.1 with X11 forwarding enabled and X11UseLocalhost disabled. Shared Unix systems and older HP-UX-like platforms deserve priority review. Treat this as a legacy configuration risk, not an emergency internet-scale issue. Prioritize systems with shared local users, X11 forwarding, and unsupported OpenSSH versions. Mitigation focus: Upgrade OpenSSH to 5.1 or later where feasible.; Review vendor guidance for platform-specific fixes or backports.; Keep X11UseLocalhost enabled unless a documented business need requires otherwise..

Prepared: Jun 28, 2026, 18:52 UTC (UTC+00:00)

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

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jul 22, 2008, 16:00 UTC (UTC+00:00)

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

CVE List V5 sourceCVE List V5
openssh-x11forwarding-info-disclosure(43940)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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