CVE-2020-8023 Local privilege escalation from ldap to root when using OPENLDAP_CONFIG_BACKEND=ldap in openldap2

What is CVE-2020-8023?

CVE-2020-8023 is a high-severity vulnerability in SUSE Enterprise Storage 5, published on 1 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A acceptance of Extraneous Untrusted Data With Trusted Data vulnerability in the start script of openldap2 of SUSE Enterprise Storage 5, SUSE Linux Enterprise Debuginfo 11-SP3, SUSE Linux Enterprise Debuginfo 11-SP4, SUSE Linux Enterprise Point of Sale 11-SP3, SUSE Linux Enterprise Server 11-SECURITY, SUSE Linux Enterprise Server 11-SP4-LTSS, SUSE Linux Enterprise Server 12-SP2-BCL, SUSE Linux Enterprise Server 12-SP2-LTSS, SUSE Linux Enterprise Server 12-SP3-BCL, SUSE Linux Enterprise Server 12-SP3-LTSS, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Server 12-SP5, SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 12-SP2, SUSE Linux Enterprise Server for SAP 12-SP3, SUSE Linux Enterprise Server for SAP 15, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud Crowbar 8; openSUSE Leap 15.1, openSUSE Leap 15.2 allows local attackers to escalate privileges from user ldap to root. This issue affects: SUSE Enterprise Storage 5 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Debuginfo 11-SP3 openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Debuginfo 11-SP4 openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Point of Sale 11-SP3 openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Server 11-SECURITY openldap2-client-openssl1 versions prior to 2.4.26-0.74.13.1. SUSE Linux Enterprise Server 11-SP4-LTSS openldap2 versions prior to 2.4.26-0.74.13.1,. SUSE Linux Enterprise Server 12-SP2-BCL openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP2-LTSS openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP3-BCL openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP3-LTSS openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP4 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 12-SP5 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server 15-LTSS openldap2 versions prior to 2.4.46-9.31.1. SUSE Linux Enterprise Server for SAP 12-SP2 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server for SAP 12-SP3 openldap2 versions prior to 2.4.41-18.71.2. SUSE Linux Enterprise Server for SAP 15 openldap2 versions prior to 2.4.46-9.31.1. SUSE OpenStack Cloud 7 openldap2 versions prior to 2.4.41-18.71.2. SUSE OpenStack Cloud 8 openldap2 versions prior to 2.4.41-18.71.2. SUSE OpenStack Cloud Crowbar 8 openldap2 versions prior to 2.4.41-18.71.2. openSUSE Leap 15.1 openldap2 versions prior to 2.4.46-lp151.10.12.1. openSUSE Leap 15.2 openldap2 versions prior to 2.4.46-lp152.14.3.1.

Weakness: CWE-349

Which versions are affected by CVE-2020-8023?

It affects 1 product.

Products include Opensuse Openldap2.

How do I fix CVE-2020-8023?

Apply the vendor's patch.

Is CVE-2020-8023 being exploited?

There is no known exploitation of CVE-2020-8023 in the wild and no public exploit code.

Other vulnerabilities in SUSE Enterprise Storage 5

• CVE-2020-8027 openldap uses fixed paths in /tmp High 7.3
• CVE-2022-31253 openldap2: /usr/lib/openldap/start allows ldap user/group to recursively chown arbitrary directory trees to itself High 7.1

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-jpq8-q698-27vp, SUSE-SU-2020:14419-1, SUSE-SU-2020:1855-1, SUSE-SU-2020:1856-1, SUSE-SU-2020:1859-1, openSUSE-SU-2020:0956-1 and 1 more.