CVE-2020-8027 openldap uses fixed paths in /tmp

What is CVE-2020-8027?

CVE-2020-8027 is a high-severity path traversal vulnerability in SUSE Linux Enterprise Server 15-LTSS, published on 11 Feb 2021. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A Insecure Temporary File vulnerability in openldap2 of SUSE Linux Enterprise Server 15-LTSS, SUSE Linux Enterprise Server for SAP 15; openSUSE Leap 15.1, openSUSE Leap 15.2 allows local attackers to overwrite arbitrary files and gain access to the openldap2 configuration This issue affects: SUSE Linux Enterprise Server 15-LTSS openldap2 versions prior to 2.4.46-9.37.1. SUSE Linux Enterprise Server for SAP 15 openldap2 versions prior to 2.4.46-9.37.1. openSUSE Leap 15.1 openldap2 versions prior to 2.4.46-lp151.10.18.1. openSUSE Leap 15.2 openldap2 versions prior to 2.4.46-lp152.14.9.1.

Weakness: CWE-377

Which versions are affected by CVE-2020-8027?

It affects 1 product.

Products include Opensuse Openldap2.

How do I fix CVE-2020-8027?

Apply the vendor's patch.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2020-8027 being exploited?

There is no known exploitation of CVE-2020-8027 in the wild and no public exploit code.

Other vulnerabilities in SUSE Linux Enterprise Server 15-LTSS

• CVE-2020-8023 Local privilege escalation from ldap to root when using OPENLDAP_CONFIG_BACKEND=ldap in openldap2 High 7.7
• 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-9rfj-vjc2-f7cj, SUSE-SU-2020:2712-1, SUSE-SU-2020:2712-2, openSUSE-SU-2020:1534-1, openSUSE-SU-2020:1539-1.