The L2TP protocol parser in tcpdump 3.8.1 and earlier allows remote attackers to cause a denial of service (infinite loop and memory consumption) via a packet with invalid data to UDP port 1701, which causes l2tp_avp_print to use a bad length value when calling print_octets.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Tcpdump | Lbl | 3.4 (including) | 3.4 (including) |
| Tcpdump | Lbl | 3.5 (including) | 3.5 (including) |
| Tcpdump | Lbl | 3.5.2 (including) | 3.5.2 (including) |
| Tcpdump | Lbl | 3.6.2 (including) | 3.6.2 (including) |
| Tcpdump | Lbl | 3.6.3 (including) | 3.6.3 (including) |
| Tcpdump | Lbl | 3.7 (including) | 3.7 (including) |
References
- http://lwn.net/Alerts/66805/
- http://marc.info/?l=bugtraq\u0026m=107193841728533\u0026w=2
- http://marc.info/?l=bugtraq\u0026m=107213553214985\u0026w=2
- http://marc.info/?l=tcpdump-workers\u0026m=107228187124962\u0026w=2
- http://secunia.com/advisories/10636
- http://secunia.com/advisories/10652
- http://secunia.com/advisories/10668
- http://secunia.com/advisories/10718
- http://www.debian.org/security/2004/dsa-425
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:008
- http://www.securityfocus.com/archive/1/350238/30/21640/threaded
- http://www.securitytracker.com/id?1008748
- http://lwn.net/Alerts/66805/
- http://marc.info/?l=bugtraq\u0026m=107193841728533\u0026w=2
- http://marc.info/?l=bugtraq\u0026m=107213553214985\u0026w=2
- http://marc.info/?l=tcpdump-workers\u0026m=107228187124962\u0026w=2
- http://secunia.com/advisories/10636
- http://secunia.com/advisories/10652
- http://secunia.com/advisories/10668
- http://secunia.com/advisories/10718
- http://www.debian.org/security/2004/dsa-425
- http://www.mandriva.com/security/advisories?name=MDKSA-2004:008
- http://www.securityfocus.com/archive/1/350238/30/21640/threaded
- http://www.securitytracker.com/id?1008748