CVE-2003-1325

Severity: medium (CVSS 5.2 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2003-12-31 · updated 2026-06-16

Description

The SV_CheckForDuplicateNames function in Valve Software Half-Life CSTRIKE Dedicated Server 1.1.1.0 and earlier allows remote authenticated users to cause a denial of service (infinite loop and daemon hang) via a certain connection string to UDP port 27015 that represents "absence of player informations," a related issue to CVE-2006-0734.

Affected products

Valve Software Half-Life Cstrike Dedicated Server: through 1.1.1.0

References

http://aluigi.altervista.org/adv/csdos.txt
http://packetstormsecurity.org/0304-exploits/hl-headnut.c
http://aluigi.altervista.org/adv/csdos.txt
http://packetstormsecurity.org/0304-exploits/hl-headnut.c

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