DConnect Daemon listen_thread_udp() buffer overflow

dconnect-daemon-listenthreadudp-bo (28276) The risk level is classified as HighHigh Risk

Description:

DConnect Daemon is vulnerable to a buffer overflow, caused by improper bounds checking by the listen_thread_udp() function in main.c. By sending a long nickname of more than 32 characters, a remote attacker could overflow a buffer and execute arbitrary code on the system.

Note: By default, the UDP port is not enabled and the min_slots parameter in dcd.conf must be enabled for this vulnerability to be exploitable.

Platforms Affected:

  • Direct Connect Daemon, DConnect Daemon prior to 0.7.0

Remedy:

Upgrade to the latest CVS release of DConnect Daemon, available from the DConnect Daemon Web site. See References.

Consequences:

Gain Access

References:

  • DConnect Daemon Web site, DConnect Daemon at http://www.dc.ds.pg.gda.pl/.
  • Luigi Auriemma Advisory 06 Aug 2006, Multiple vulnerabilities in DConnect Daemon 0.7.0 (CVS 30 Jul 2006) at http://aluigi.altervista.org/adv/dconnx-adv.txt.
  • BID-19369: DConnect Daemon Listen Thread UDP Remote Buffer Overflow Vulnerability
  • CVE-2006-4125: Stack-based buffer overflow in main.c in DConnect Daemon 0.7.0 and earlier allows remote attackers to execute arbitrary code via a large nickname, which is not properly handled by the listen_thread_udp function.
  • SA21384: DConnect Daemon Multiple Vulnerabilities
  • SECTRACK ID: 1016641: DConnect Daemon Format String and Buffer Overflow Flaws Let Remote Users Deny Service or Execute Arbitrary Code
  • VUPEN/ADV-2006-3181: DConnect Daemon Multiple Remote Command Execution and Denial of Service Vulnerabilities

Reported:

Aug 06, 2006

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