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IBM AIX 7.x Security Technical Implementation Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • SRG-OS-000095-GPOS-00049

    <GroupDescription></GroupDescription>
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  • The pop3 daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;The pop3 service provides a pop3 server. It supports the pop3 remote mail access protocol. It works with sendmail and bellmai...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

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  • SRG-OS-000080-GPOS-00048

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  • AIX must turn on enhanced Role-Based Access Control (RBAC) to isolate security functions from nonsecurity functions, to grant system privileges to other operating system admins, and prohibit user installation of system software without explicit privileged status.

    &lt;VulnDiscussion&gt;To mitigate the risk of unauthorized access to sensitive information by entities that have been issued certificates by DoD-ap...
    Rule Medium Severity
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  • SRG-OS-000095-GPOS-00049

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  • If DHCP server is not required on AIX, the DHCP server must be disabled.

    &lt;VulnDiscussion&gt;The dhcpsd daemon is the DHCP server that serves addresses and configuration information to DHCP clients in the network. To ...
    Rule Medium Severity
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  • The Internet Network News (INN) server must be disabled on AIX.

    &lt;VulnDiscussion&gt;Internet Network News (INN) servers access Usenet newsfeeds and store newsgroup articles. INN servers use the Network News Tr...
    Rule Medium Severity
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  • SRG-OS-000096-GPOS-00050

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  • If Stream Control Transmission Protocol (SCTP) must be disabled on AIX.

    &lt;VulnDiscussion&gt;The Stream Control Transmission Protocol (SCTP) is an IETF-standardized transport layer protocol. This protocol is not yet wi...
    Rule Medium Severity
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  • SRG-OS-000096-GPOS-00050

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  • The Reliable Datagram Sockets (RDS) protocol must be disabled on AIX.

    &lt;VulnDiscussion&gt;The Reliable Datagram Sockets (RDS) protocol is a relatively new protocol developed by Oracle for communication between the n...
    Rule Medium Severity
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  • SRG-OS-000378-GPOS-00163

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  • If automated file system mounting tool is not required on AIX, it must be disabled.

    &lt;VulnDiscussion&gt;Automated file system mounting tools may provide unprivileged users with the ability to access local media and network shares...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

    <GroupDescription></GroupDescription>
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  • AIX process core dumps must be disabled.

    &lt;VulnDiscussion&gt;A core dump includes a memory image taken at the time the operating system terminates an application. The memory image could ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX kernel core dumps must be disabled unless needed.

    &lt;VulnDiscussion&gt;Kernel core dumps may contain the full contents of system memory at the time of the crash. Kernel core dumps may consume a co...
    Rule Medium Severity
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  • SRG-OS-000142-GPOS-00071

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  • SRG-OS-000095-GPOS-00049

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  • The rwalld daemon must be disabled on AIX.

    &lt;VulnDiscussion&gt;The rwalld service allows remote users to broadcast system wide messages. The service runs as root and should be disabled unl...
    Rule Medium Severity
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  • AIX must set Stack Execution Disable (SED) system wide mode to all.

    &lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot ac...
    Rule Medium Severity
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  • SRG-OS-000420-GPOS-00186

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  • AIX must protect against or limit the effects of Denial of Service (DoS) attacks by ensuring AIX is implementing rate-limiting measures on impacted network interfaces.

    &lt;VulnDiscussion&gt;DoS is a condition when a resource is not available for legitimate users. When this occurs, the organization either cannot ac...
    Rule Medium Severity
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  • SRG-OS-000312-GPOS-00122

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  • AIX must allow admins to send a message to all the users who logged in currently.

    &lt;VulnDiscussion&gt;Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have di...
    Rule Medium Severity
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  • SRG-OS-000312-GPOS-00122

    <GroupDescription></GroupDescription>
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  • AIX must allow admins to send a message to a user who logged in currently.

    &lt;VulnDiscussion&gt;Discretionary Access Control (DAC) is based on the notion that individual users are "owners" of objects and therefore have di...
    Rule Medium Severity
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  • SRG-OS-000033-GPOS-00014

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  • The AIX SSH daemon must be configured to only use FIPS 140-2 approved ciphers.

    &lt;VulnDiscussion&gt;Without confidentiality protection mechanisms, unauthorized individuals may gain access to sensitive information via a remote...
    Rule Medium Severity
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  • SRG-OS-000073-GPOS-00041

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  • In the event of a system failure, AIX must preserve any information necessary to determine cause of failure and any information necessary to return to operations with least disruption to mission processes.

    &lt;VulnDiscussion&gt;Failure to a known state can address safety or security in accordance with the mission/business needs of the organization. Fa...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The /etc/shells file must exist on AIX systems.

    &lt;VulnDiscussion&gt;The shells file (or equivalent) lists approved default shells. It helps provide layered defense to the security approach by e...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX public directories must be the only world-writable directories and world-writable files must be located only in public directories.

    &lt;VulnDiscussion&gt;World-writable files and directories make it easy for a malicious user to place potentially compromising files on the system....
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX must be configured to only boot from the system boot device.

    &lt;VulnDiscussion&gt;The ability to boot from removable media is the same as being able to boot into single user or maintenance mode without a pas...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • AIX must not use removable media as the boot loader.

    &lt;VulnDiscussion&gt;Malicious users with removable boot media can gain access to a system configured to use removable media as the boot loader.&l...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • If the AIX host is running an SMTP service, the SMTP greeting must not provide version information.

    &lt;VulnDiscussion&gt;The version of the SMTP service can be used by attackers to plan an attack based on vulnerabilities present in the specific v...
    Rule Low Severity
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  • SRG-OS-000480-GPOS-00227

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  • SMTP service must not have the EXPN or VRFY features active on AIX systems.

    &lt;VulnDiscussion&gt;The SMTP EXPN function allows an attacker to determine if an account exists on a system, providing significant assistance to ...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • All global initialization file executable search paths must contain only absolute paths.

    &lt;VulnDiscussion&gt;Failure to restrict system access to authenticated users negatively impacts operating system security.&lt;/VulnDiscussion&gt;...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • The SMTP service HELP command must not be enabled on AIX.

    &lt;VulnDiscussion&gt;The HELP command should be disabled to mask version information. The version of the SMTP service software could be used by at...
    Rule Medium Severity
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  • SRG-OS-000480-GPOS-00227

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  • NIS maps must be protected through hard-to-guess domain names on AIX.

    &lt;VulnDiscussion&gt;The use of hard-to-guess NIS domain names provides additional protection from unauthorized access to the NIS directory inform...
    Rule Medium Severity
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