CVE-2022-32746 - Use After Free

Severity

54%

Complexity

27%

Confidentiality

41%

A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module, resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes, such as userAccountControl.

CVSS 3.1 Base Score 5.4. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L).

Demo Examples

Use After Free

CWE-416

The following example demonstrates the weakness.


               
}
free(buf3R2);

Use After Free

CWE-416

The following code illustrates a use after free error:


               
}
free(ptr);
logError("operation aborted before commit", ptr);

When an error occurs, the pointer is immediately freed. However, this pointer is later incorrectly used in the logError function.

Overview

First reported 2 years ago

2022-08-25 18:15:00

Last updated 2 years ago

2022-08-30 19:54:00

Affected Software

Samba Samba

References

https://www.samba.org/samba/security/CVE-2022-32746.html

https://www.samba.org/samba/security/CVE-2022-32746.html

Patch, Vendor Advisory

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