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CVE-2020-15719

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third...

4.2 MediumFix available

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

2.51%Up 1.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 4.2

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
CVE-2020-15719
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 2.0
4.0 MediumAV:N/AC:H/Au:N/C:P/I:P/A:N
Weakness
CWE-295
Updated
2026-11-02
CVE List No score

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
CVE-2020-15719
Updated
2026-11-02
EUVDEUVD-2020-7705 No score

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
EUVD-2020-7705
Updated
2026-11-03
GitHub AdvisoriesGHSA-pg7h-v386-fw8h 4.2

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third...

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
GHSA-pg7h-v386-fw8h
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-295
Updated
2026-11-02
OSV 4.2

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
CVE-2020-15719
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2020-15719 4.2

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
DEBIAN-CVE-2020-15719
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
Show 6 moreShow less
OSVRHBA-2019:3674 4.2

Red Hat Bug Fix Advisory: openldap bug fix and enhancement update

Record
RHBA-2019:3674
CVSS 3.1
4.2 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVBIT-openldap-2020-15719 No score

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Record
BIT-openldap-2020-15719
Updated
2026-11-02
OSVopenSUSE-SU-2020:1416-1 No score

Security update for openldap2

This update for openldap2 fixes the following issues:

  • bsc#1174154 - CVE-2020-15719 - This resolves an issue with x509 SAN's falling back to CN validation in violation of rfc6125.

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1416-1
Updated
2026-11-02
OSVopenSUSE-SU-2020:1459-1 No score

Security update for openldap2

This update for openldap2 fixes the following issues:

  • bsc#1174154 - CVE-2020-15719 - This resolves an issue with x509 SAN's falling back to CN validation in violation of rfc6125.

This update was imported from the SUSE:SLE-15:Update update project.

Record
openSUSE-SU-2020:1459-1
Updated
2026-11-02
OSVROOT-OS-DEBIAN-12-CVE-2020-15719 No score

CVE-2020-15719 in openldap - Patched by Root

Root has patched CVE-2020-15719 in the openldap package for Root:Debian:12. Multiple fixed versions available.

Record
ROOT-OS-DEBIAN-12-CVE-2020-15719
Updated
2026-11-02
OSVSUSE-SU-2020:2581-1 No score

Security update for openldap2

This update for openldap2 fixes the following issues:

  • bsc#1174154 - CVE-2020-15719 - This resolves an issue with x509 SAN's falling back to CN validation in violation of rfc6125.
Record
SUSE-SU-2020:2581-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openldap
Bitnami
 before 2.4.46-10.el8
2.4.46-10.el8
openldap
Debian:12
 All versions, plus listed versions
1:1.2.12-12.5.13+dfsg-52.5.13+dfsg-5+loong642.5.16+dfsg-12.5.16+dfsg-2
Show 27 moreShow less
2.5.17+dfsg-12.5.18+dfsg-12.5.18+dfsg-22.5.18+dfsg-32.5.19+dfsg-12.6.10+dfsg-12.6.13+dfsg-12.6.14+dfsg-12.6.14+dfsg-22.6.2+dfsg-1~exp12.6.2+dfsg-1~exp22.6.3+dfsg-1~exp12.6.4+dfsg-1~exp12.6.5+dfsg-1~exp12.6.6+dfsg-1~exp12.6.6+dfsg-1~exp22.6.7+dfsg-1~exp12.6.8+dfsg-1~exp12.6.8+dfsg-1~exp22.6.8+dfsg-1~exp32.6.8+dfsg-1~exp42.6.9+dfsg-12.6.9+dfsg-1~exp12.6.9+dfsg-1~exp22.6.9+dfsg-22:1.2.12.1-12:1.2.12.1-1.0.1
 None known
openldap
Debian:13
 All versions, plus listed versions
1:1.2.12-12.6.10+dfsg-12.6.13+dfsg-12.6.14+dfsg-12.6.14+dfsg-22:1.2.12.1-12:1.2.12.1-1.0.1
 None known
openldap
Debian:14
 All versions, plus listed versions
1:1.2.12-12.6.10+dfsg-12.6.13+dfsg-12.6.14+dfsg-12.6.14+dfsg-22:1.2.12.1-12:1.2.12.1-1.0.1
 None known
openldap
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
openldap-clients
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
openldap-clients-debuginfo
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
openldap-debuginfo
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
openldap-debugsource
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
openldap-devel
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
Show 11 moreShow less
Affected packages
PackageAffectedFixed
openldap-servers-debuginfo
Red Hat:enterprise_linux:8::baseos
 before 0:2.4.46-10.el8
0:2.4.46-10.el8
openldap
Root:Debian:12
 before 2.5.13+dfsg-5.root.io.5
2.5.13+dfsg-5.root.io.52.5.13+dfsg-5.root.io.62.5.13+dfsg-5.aikido.7
rootio-openldap
Root:Debian:12
 before 2.5.13+dfsg-5.root.io.5
2.5.13+dfsg-5.root.io.52.5.13+dfsg-5.root.io.62.5.13+dfsg-5.aikido.7
openldap2
SUSE:Linux Enterprise Module for Basesystem 15 SP1
 before 2.4.46-9.34.1
2.4.46-9.34.1
openldap2
SUSE:Linux Enterprise Module for Basesystem 15 SP2
 before 2.4.46-9.34.1
2.4.46-9.34.1
openldap2
SUSE:Linux Enterprise Module for Development Tools 15 SP1
 before 2.4.46-9.34.1
2.4.46-9.34.1
openldap2
SUSE:Linux Enterprise Module for Development Tools 15 SP2
 before 2.4.46-9.34.1
2.4.46-9.34.1
openldap2
SUSE:Linux Enterprise Module for Legacy 15 SP1
 before 2.4.46-9.34.1
2.4.46-9.34.1
openldap2
SUSE:Linux Enterprise Module for Legacy 15 SP2
 before 2.4.46-9.34.1
2.4.46-9.34.1
openldap2
openSUSE:Leap 15.1
 before 2.4.46-lp151.10.15.1
2.4.46-lp151.10.15.1
openldap2
openSUSE:Leap 15.2
 before 2.4.46-lp152.14.6.1
2.4.46-lp152.14.6.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-15719 is a medium vulnerability (CVSS 4.2) in Openldap, published July 14, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.51%, the 84th percentile. Fixed in openldap 2.4.46-10.el8.

References

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