Improper Certificate Validation in openldap (Red Hat package) - CVE-2020-15719

Vulnerability identifier: #VU98558

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-15719

CWE-ID: CWE-295

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation in libldap. A remote attacker can perform MitM attack.

openldap (Red Hat package)
openldap
openldap-clients
openldap-debuginfo
openldap-debugsource
openldap-devel
openldap-help
openldap-servers
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
openEuler
Splunk Enterprise

Install updates from vendor's website.

openldap (Red Hat package) - update to 2.4.46-10.el8
Splunk Enterprise - addressed in versions 9.1.6, 9.2.3, 9.3.1
openldap - update to 2.4.49-4
openldap-clients - update to 2.4.49-4
openldap-debuginfo - update to 2.4.49-4
openldap-debugsource - update to 2.4.49-4
openldap-devel - update to 2.4.49-4
openldap-help - update to 2.4.49-4
openldap-servers - update to 2.4.49-4

• https://access.redhat.com/errata/RHBA-2019:3674
• https://bugzilla.redhat.com/show_bug.cgi?id=1740070
• https://bugs.openldap.org/show_bug.cgi?id=9266
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00033.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00059.html
• https://kc.mcafee.com/corporate/index?page=content&id=SB10365
• https://www.oracle.com/security-alerts/cpuapr2022.html

• Splunk Enterprise update for third-party components
• openEuler 20.03 LTS update for openldap-2.4.49-2
• Red Hat Enterprise Linux 8 update for the openldap module