OpenAnolis Anolis OS 2.73;0 Group Name pam_cap.so access control

Summaryinfo

A vulnerability marked as critical has been reported in OpenAnolis Anolis OS 2.73;0. Affected by this issue is some unknown functionality of the file pam_cap.so of the component Group Name Handler. Performing a manipulation results in access control. This vulnerability is known as CVE-2025-1390. Attacking locally is a requirement. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in OpenAnolis Anolis OS 2.73;0. This affects an unknown code of the file pam_cap.so of the component Group Name Handler. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The PAM module pam_cap.so of libcap configuration supports group names starting with “@”, during actual parsing, configurations not starting with “@” are incorrectly recognized as group names. This may result in nonintended users being granted an inherited capability set, potentially leading to security risks. Attackers can exploit this vulnerability to achieve local privilege escalation on systems where /etc/security/capability.conf is used to configure user inherited privileges by constructing specific usernames.

It is possible to read the advisory at bugzilla.openanolis.cn. This vulnerability is uniquely identified as CVE-2025-1390 since 02/17/2025. The exploitability is told to be easy. Attacking locally is a requirement. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 216893 (CBL Mariner 2.0 Security Update: libcap (CVE-2025-1390)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (216893). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• OpenAnolis

Name

• Anolis OS

Version

• 2.73;0

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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