Date: Wed, 03 Apr 2013 16:27:58 +0200 From: Florian Weimer <fweimer@...hat.com> To: oss-security@...ts.openwall.com CC: Marcus Meissner <meissner@...e.de> Subject: Re: CVE Request: glibc getaddrinfo() stack overflow On 04/03/2013 01:10 PM, Marcus Meissner wrote: > I am not sure you can usually push this amount of addresses via DNS for all > setups. Both IPv4 and IPv6 addresses are combined in that array, right? Then the protocol limit seems to be around 4000 + 2300 addresses (NAME (2 bytes with compression) + RCLASS (2) + RTYPE(2) + TTL (4) + RDATALEN(2) + RDATA(4 or 16) per record, total available space is 64K), which could be used to blow 128K stacks sometimes used by JVMs. -- Florian Weimer / Red Hat Product Security Team
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.