Improper Authorization in openldap (Alpine package)

1) Improper Authorization

EUVDB-ID: #VU19561

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-13057

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to incorrect processing of rootDN delegation in the OpenLDAP multi-tenant deployments. A database administrator could use this issue to request authorization as an identity from another database, contrary to expectations.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openldap (Alpine package): 2.4.24-r0 - 2.4.48-r1

External links

http://git.alpinelinux.org/aports/commit/?id=9ddc3495242d68471af48fd96331ba0d40570080
http://git.alpinelinux.org/aports/commit/?id=d2d4b8f40c5ce345d2fa7e6812b200450f4d1973
http://git.alpinelinux.org/aports/commit/?id=eb7c99fb435406b592f0b923ab91a380ed04eb64
http://git.alpinelinux.org/aports/commit/?id=245b526abb5493a981c7ad33f9a6b264fcd11265
http://git.alpinelinux.org/aports/commit/?id=9eb2f7f4d4ac07bbabe6a18f96444a50fc2cc5b2
http://git.alpinelinux.org/aports/commit/?id=af3ed181bcf3f7faf6fa68921476a724d8bd0e0f
http://git.alpinelinux.org/aports/commit/?id=fad85a325388ffbdb0f30f6396fdb8188f0725ac

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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