Red Hat Enterprise Linux 7 update for 389-ds-base

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

389-ds-base (Red Hat package): 1.3.10.2-12.el7_9 - 1.3.10.2-16.el7_9

Red Hat Enterprise Linux for Power, little endian: 7

Red Hat Enterprise Linux for Power, big endian: 7

Red Hat Enterprise Linux for IBM z Systems: 7

Red Hat Enterprise Linux for Scientific Computing: 7

Red Hat Enterprise Linux Desktop: 7

Red Hat Enterprise Linux Workstation: 7

Red Hat Enterprise Linux Server: 7

External links

http://access.redhat.com/errata/RHSA-2022:7087

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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