CVE-2008-0384

OpenBSD 4.2 - Denial of Service via SIOCGIFRTLABEL IOCTL

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2008-0384. PoCs published by Hunger.

AI-analyzed exploit summary This exploit triggers a null pointer dereference in OpenBSD 4.2 via the SIOCGIFRTLABEL ioctl, causing a local denial of service (kernel panic). The code creates a socket and issues the malicious ioctl call, leading to a kernel crash.

Description

OpenBSD 4.2 allows local users to cause a denial of service (kernel panic) by calling the SIOCGIFRTLABEL IOCTL on an interface that does not have a route label, which triggers a NULL pointer dereference when the return value from the rtlabel_id2name function is not checked.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Hunger · cdosbsd
https://www.exploit-db.com/exploits/4935

This exploit triggers a null pointer dereference in OpenBSD 4.2 via the SIOCGIFRTLABEL ioctl, causing a local denial of service (kernel panic). The code creates a socket and issues the malicious ioctl call, leading to a kernel crash.

Classification
Working Poc 100%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: OpenBSD 4.2
No auth needed
Prerequisites: Local access to an OpenBSD 4.2 system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/27252
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/4935
Various Sources vendor-advisory x_refsource_openbsd
http://www.openbsd.org/errata42.html#005_ifrtlabel
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/28473
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1019188
Mailing List mailing-list x_refsource_mlist
http://marc.info/?l=openbsd-security-announce&m=120007327504064

Scores

EPSS 0.0085
EPSS Percentile 53.2%

Details

Status published
Products (1)
openbsd/openbsd 4.2
Published Jan 22, 2008
Tracked Since Feb 18, 2026