Very High
CVE-2020-11698
CVE ID
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CVE-2020-11698
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
An issue was discovered in Titan SpamTitan 7.07. Improper input sanitization of the parameter community on the page snmp-x.php would allow a remote attacker to inject commands into the file snmpd.conf that would allow executing commands on the target server.
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Ratings
-
Attacker ValueVery High
-
ExploitabilityVery High
Technical Analysis
SpamTitan Gateway is an anti-spam appliance that protects against unwanted emails and malwares. Versions 7.01, 7.02, 7.03 and 7.07 are vulnerable to Remote Code Execution as root
due to improper input sanitization. Note that only version 7.03 needs authentication and no authentication is required for versions 7.01, 7.02 and 7.07.
The attack consists in abusing the SpamTitan Gateway UI SNMP Management Settings
feature to inject dangerous SNMPD
command directives into the SNMP server configuration file. This is can be done in two steps:
- Send an HTTP POST request to the
snmp-x.php
page with a specially craftedcommunity
parameter:
...[SNIP]...&community=<community>" <ip>\nextend <random name> <payload>
.
This will end up being added tosnmp.conf
like this:
…[SNIP]...
rocommunity "<community>" <ip>
extend <random name> <payload>
…[SNIP]...
- Send an SNMP
Get-Request
to correct OID to trigger the payload.
Since a proof o concept and a Metasploit module are available, it is highly recommended to upgrade to the latest available version.
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General Information
Vendors
- titanhq
Products
- spamtitan 7.07
References
Miscellaneous
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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