Red Hat Directory Server 12.0 for RHEL 9 update for the redhat-ds:12 module

1) NULL pointer dereference

EUVDB-ID: #VU66990

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2850

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the sync_create_state_control() function when running a sync_repl client. A remote authenticated user can pass a malformed cookie in a query and perform a denial of service (DoS) attack.

Note, the vulnerability exists due to incomplete fix for #VU54107 (CVE-2021-3514).

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Directory Server: 12

External links

http://access.redhat.com/errata/RHSA-2023:0479

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.