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CVE-2020-24046

HIGH
7.2
CVSS Score
Published: September 17, 2020 at 04:39 PM UTC
Updated: June 17, 2026 at 03:05 AM UTC
1 product affected across 1 vendorSpamtitan

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Severity
HIGH7.2
Exploit prediction
EPSS 3%

Description

A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07. It limits the admin user to a restricted shell, allowing execution of a small number of tools of the operating system. This restricted shell can be bypassed after changing the properties of the user admin in the operating system file /etc/passwd. This file cannot be accessed though the restricted shell, but it can be modified by abusing the Backup/Import Backup functionality of the web interface. An authenticated attacker would be able to obtain the file /var/tmp/admin.passwd after executing a Backup operation. This file can be manually modified to change the GUID of the user to 0 (root) and change the restricted shell to a normal shell /bin/sh. After the modification is done, the file can be recompressed to a .tar.bz file and imported again via the Import Backup functionality. The properties of the admin user will be overwritten and a root shell will be granted to the user upon the next successful login.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/felmoltor
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://sensepost.com/blog/2020/clash-of-the-spamtitan/
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://twitter.com/felmoltor
x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.titanhq.com

CVSS

7.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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