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    CVE-2020-24046

    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.

    Published:Sep 17, 2020
    Last Modified:Nov 21, 2024
    EPS:Sep 17, 2020
    EPSS Score:0.03565
    CVSS Score:7.2

    Affected Products

    Vendor
    Titanhq
    Product
    Spamtitan

    Exploits

    https://sensepost.com/blog/2020/clash-of-the-spamtitan/https://sensepost.com/blog/2020/clash-of-the-spamtitan/

    Common Weakness Enumeration

    CWE-269 Improper Privilege Management

    Related CVEs

    CVE-2020-35658 (CVSS 5.3) — SpamTitan before 7.09 allows attackers to tamper with backups, because backups are not encrypted.…
    CVE-2020-24045 (CVSS 7.2) — A sandbox escape issue was discovered in TitanHQ SpamTitan Gateway 7.07. It limits the admin user to a restric…
    CVE-2020-11700 (CVSS 6.5) — An issue was discovered in Titan SpamTitan 7.07. Improper sanitization of the parameter fname, used on the pag…
    CVE-2020-11699 (CVSS 8.8) — An issue was discovered in Titan SpamTitan 7.07. Improper validation of the parameter fname on the page certs-…
    CVE-2020-11698 (CVSS 9.8) — An issue was discovered in Titan SpamTitan 7.07. Improper input sanitization of the parameter community on the…
    CVE-2020-11804 (CVSS 8.8) — An issue was discovered in Titan SpamTitan 7.07. Due to improper sanitization of the parameter quid, used in t…
    CVE-2020-11803 (CVSS 8.8) — An issue was discovered in Titan SpamTitan 7.07. Improper sanitization of the parameter jaction when interacti…
    CVE-2019-6800 (CVSS 7.5) — In TitanHQ SpamTitan through 7.03, a vulnerability exists in the spam rule update function. Updates are downlo…
    CVE-2018-15136 (CVSS 5.3) — TitanHQ SpamTitan before 7.01 has Improper input validation. This allows internal attackers to bypass the anti…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High