Date: Thu, 19 Jan 2012 22:27:51 -0700 From: Kurt Seifried <kseifried@...hat.com> To: oss-security@...ts.openwall.com CC: Agostino Sarubbo <ago@...too.org> Subject: Re: CVE Request for spamdyke "STARTTLS" Plaintext On 01/15/2012 07:48 AM, Agostino Sarubbo wrote: > In reference of: http://www.openwall.com/lists/oss-security/2012/01/07/1 : > > According to secunia security advisory ( https://secunia.com/advisories/47435 > ) : > > Description: > A vulnerability has been reported in spamdyke, which can be exploited by > malicious people to manipulate certain data. > > The vulnerability is caused due to the TLS implementation not properly > clearing transport layer buffers when upgrading from plaintext to ciphertext > after receiving the "STARTTLS" command. This can be exploited to insert > arbitrary plaintext data (e.g. SMTP commands) during the plaintext phase, > which will then be executed after upgrading to the TLS ciphertext phase. > > The vulnerability is reported in versions prior to 4.2.1. > > > Solution: > Update to version 4.2.1. > > > And from upstream changelog ( > http://www.spamdyke.org/documentation/Changelog.txt ): > > Changed smtp_filter() and middleman() to discard any buffered input after TLS > is started. This prevents the injection of commands into a secure session > by sending extra input in the same packet as the "STARTTLS" command. Not > really a security problem but good practice anyway. Thanks to Eric > Shubert for reporting this one. > > > Sorry Kurt, but atm, I have not found the commit code. > > Thanks, this helped clarify it a lot. Please use CVE-2012-0070 for this issue. -- -- Kurt Seifried / Red Hat Security Response 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.