Description
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 products
- lbl / tcpdump3.4 – 3.4
- lbl / tcpdump3.5 – 3.5
- lbl / tcpdump3.5.2 – 3.5.2
- lbl / tcpdump3.6.2 – 3.6.2
- lbl / tcpdump3.6.3 – 3.6.3
- lbl / tcpdump3.7 – 3.7
References
- VENDOR_ADVISORYhttp://secunia.com/advisories/10718
- VENDOR_ADVISORYhttp://secunia.com/advisories/10668
- MAILING_LISThttp://marc.info/?l=tcpdump-workers&m=107228187124962&w=2
- VENDOR_ADVISORYhttp://secunia.com/advisories/10636
- MISChttp://www.securitytracker.com/id?1008748
- MISChttp://lwn.net/Alerts/66805/
- VENDOR_ADVISORYhttp://www.mandriva.com/security/advisories?name=MDKSA-2004:008
- MISChttp://www.securityfocus.com/archive/1/350238/30/21640/threaded
- VENDOR_ADVISORYhttp://www.debian.org/security/2004/dsa-425
- VENDOR_ADVISORYhttp://secunia.com/advisories/10652
- MAILING_LISThttp://marc.info/?l=bugtraq&m=107213553214985&w=2
- MAILING_LISThttp://marc.info/?l=bugtraq&m=107193841728533&w=2