Linux-PAM up to 1.5.2-6.0 on openSUSE SSH Login pam_access.so improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

A vulnerability has been found in Linux-PAM up to 1.5.2-6.0 on openSUSE and classified as critical. Affected by this vulnerability is an unknown function of the file pam_access.so of the component SSH Login Handler. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 weakness was presented 09/20/2022. It is possible to read the advisory at bugzilla.suse.com. This vulnerability is known as CVE-2022-28321 since 04/01/2022. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.5.2-6.1 eliminates this vulnerability. The upgrade is hosted for download at download.opensuse.org.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
ATT&CK: Unknown

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Linux-PAM 1.5.2-6.1

Timelineinfo

04/01/2022 🔍
09/20/2022 +172 days 🔍
09/20/2022 +0 days 🔍
10/20/2022 +30 days 🔍

Sourcesinfo

Advisory: bugzilla.suse.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-28321 (🔍)

Entryinfo

Created: 09/20/2022 07:56
Updated: 10/20/2022 19:24
Changes: 09/20/2022 07:56 (43), 10/20/2022 19:24 (11)
Complete: 🔍

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