Kaspersky Internet Security IPv6 Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID: 1028244|
SecurityTracker URL: http://securitytracker.com/id/1028244
(Links to External Site)
Updated: Mar 5 2013|
Original Entry Date: Mar 4 2013
Denial of service via network|
Fix Available: Yes Vendor Confirmed: Yes Exploit Included: Yes |
A vulnerability was reported in Kaspersky Internet Security. A remote user can cause denial of service conditions.|
A remote user can send a specially crafted fragmented IPv6 packet to cause the target system to freeze.
The Kaspersky Anti-Virus NDIS 6 Filter is affected.
The vendor was notified on January 21, 2013 without response.
Marc Heuse reported this vulnerability.
A remote user can cause the target system to freeze.|
The vendor has issued a fix, available from customer support.|
The fix to be available via automatic update is pending.
Vendor URL: www.kaspersky.com/ (Links to External Site)
|Underlying OS: Windows (Any)|
Source Message Contents
Subject: Remote system freeze thanks to Kaspersky Internet Security 2013|
I usually do not write security advisories unless absolutely necessary.
This time I should, however I have neither the time, nor the desire to
But Kaspersky did not react, so ... quick and dirty:
Kaspersky Internet Security 2013 (and any other Kaspersky product which
includes the firewall funcionality) is susceptible to a remote system
As of the 3rd March 2013, the bug is still unfixed.
If IPv6 connectivity to a victim is possible (which is always the case
on local networks), a fragmented packet with multiple but one large
extension header leads to a complete freeze of the operating system.
No log message or warning window is generated, nor is the system able to
perform any task.
1. download the thc-ipv6 IPv6 protocol attack suite for Linux from
2. compile the tools with "make"
3. run the following tool on the target:
firewall6 <interface> <target> <port> 19
where interface is the network interface (e.g. eth0)
target is the IPv6 address of the victim (e.g. ff02::1)
port is any tcp port, doesnt matter which (e.g. 80)
and 19 is the test case number.
The test case numbers 18, 19, 20 and 21 lead to a remote system freeze.
Solution: Remove the Kaspersky Anti-Virus NDIS 6 Filter from all network
interfaces or uninstall the Kaspersky software until a fix is provided.
The bug was reported to Kaspersky first on the 21st January 2013, then
reminded on the 14th Feburary 2013.
No feedback was given by Kaspersky, and the reminder contained a warning
that without feedback the bug would be disclosed on this day. So here we
PGP: FEDD 5B50 C087 F8DF 5CB9 876F 7FDD E533 BF4F 891A