The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory; it does not affect Linux-PAM upstream.

The Linux-PAM package before 1.5.2-6.1 for openSUSE Tumbleweed allows authentication bypass for SSH logins. The pam_access.so module doesn't correctly restrict login if a user tries to connect from an IP address that is not resolvable via DNS. In such conditions, a user with denied access to a machine can still get access. NOTE: the relevance of this issue is largely limited to openSUSE Tumbleweed and openSUSE Factory;
it does not affect Linux-PAM upstream.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5825-2 advisory.

    USN-5825-1 fixed vulnerabilities in PAM. Unfortunately that update was incomplete and could introduce a     regression. This update fixes the problem.

    We apologize for the inconvenience.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5825-1 advisory.

    It was discovered that PAM did not correctly restrict login from an IP address that is not resolvable via     DNS. An attacker could possibly use this issue to bypass authentication.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
504255	Siemens SIMATIC S7-1500 Improper Authentication (CVE-2022-28321)	Tenable OT Security	Tenable.ot	critical
171011	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : PAM regressions (USN-5825-2)	Nessus	Ubuntu Local Security Checks	critical
170644	Ubuntu 16.04 ESM / 18.04 LTS / 20.04 LTS / 22.04 LTS : PAM vulnerability (USN-5825-1)	Nessus	Ubuntu Local Security Checks	critical

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CVE-2022-28321

critical

Tenable Plugins

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critical

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