2087.txt

来自「This is the snapshot of Snot Latest Rule」· 文本 代码 · 共 61 行

Rule:

--
Sid:
2087

--
Summary:
This event is generated when an attempt is made to exploit a known vulnerability in Sendmail.

--
Impact:
The remote attacker can gain access to a machine with the credentials of the user running the Sendmail daemon, usually 'root'.

--
Detailed Information:
A vulnerability exists in the Sendmail MTA Daemon that could allow an attacker the opportunity to gain root access.

A programming error exists such that a buffer overflow can be caused using the header fields in an SMTP session. Using the '<' and '>' characters in the 'from' field, an attacker can increment a counter to the extent that the buffer exceeds it's limit.

--
Affected Systems:
All systems using Sendmail prior to version 8.12.8
	
--
Attack Scenarios:
The attacker can craft an email message that contains a "from" header with enough sequences of "<>" to cause a counter to exceed it's maximum size thus causing the buffer overflow.

--
Ease of Attack:
Simple

--
False Positives:
None Known

--
False Negatives:
None Known

--
Corrective Action:
All users of Sendmail should upgrade to the latest non-affected version as soon as possible.

--
Contributors:
Sourcefire Vulnerability Research Team
Brian Caswell <[e-mail]>
Nigel Houghton <[e-mail]>

--
Additional References:

CERT:
http://www.cert.org/advisories/CA-2003-07.html

Sendmail:
http://www.sendmail.org/8.12.8.html

--