Snort mailing list archives
Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow
From: Joel Esler <jesler () sourcefire com>
Date: Sun, 25 Mar 2012 17:11:27 -0400
I don't know where you got that rule from, but it's different from ours: alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow"; flow:established,to_server; flowbits:isset,qualcom.worldmail.ok; dsize:>668; metadata:policy balanced-ips drop, policy security-ips drop, service imap; reference:bugtraq,15980; reference:cve,2005-4267; classtype:attempted-admin; sid:17328; rev:1;) Which depends upon this rule: alert tcp $HOME_NET 143 -> $EXTERNAL_NET any (msg:"IMAP Qualcomm WorldMail Server Response"; flow:established,to_client; content:"WorldMail IMAP4 Server"; fast_pattern:only; nocase; flowbits:set,qualcom.worldmail.ok; flowbits:noalert; metadata:service imap; classtype:protocol-command-decode; sid:17327; rev:6;) J On Mar 25, 2012, at 3:35 PM, Yew Chuan Ong wrote:
Hye guys, I experienced lots of FPs with this sig - IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow. alert tcp $EXTERNAL_NET any -> $HOME_NET 143 (msg:"IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow"; flow:established,to_server; dsize:>668; metadata:policy balanced-ips drop, policy security-ips drop, service imap; refer ence:bugtraq,15980; reference:cve,2005-4267; classtype:attempted-admin; sid:1732 8; rev:1;) When I checked on the payloads, these are just normal email contents (not suspicious). I am wondering why the packet size is more than 668 bytes if it is not a real buffer overflow attempt. Any ideas? Thanks. Regards Yew Chuan ------------------------------------------------------------------------------ This SF email is sponsosred by: Try Windows Azure free for 90 days Click Here http://p.sf.net/sfu/sfd2d-msazure_______________________________________________ Snort-sigs mailing list Snort-sigs () lists sourceforge net https://lists.sourceforge.net/lists/listinfo/snort-sigs http://www.snort.org Please visit http://blog.snort.org for the latest news about Snort!
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Current thread:
- IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow Yew Chuan Ong (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow rmkml (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow Yew Chuan Ong (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow rmkml (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow Joel Esler (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow Yew Chuan Ong (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow rmkml (Mar 25)
- Re: IMAP Qualcomm WorldMail IMAP Literal Token Parsing Buffer Overflow Joel Esler (Mar 25)