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Fencer Vulns
high 7.5

CVE-2019-13565 json

An issue was discovered in OpenLDAP 2.x before 2.4.48.

published 2019-07-26 7 y ago modified 2026-10-14 26 d ago also EUVD-2019-5020

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

An issue was discovered in OpenLDAP 2.x before 2.4.48. When using SASL authentication and session encryption, and relying on the SASL security layers in slapd access controls, it is possible to obtain access that would otherwise be denied via a simple bind for any identity covered in those ACLs. After the first SASL bind is completed, the sasl_ssf value is retained for all new non-SASL connections. Depending on the ACL configuration, this can affect different types of operations (searches, modifications, etc.). In other words, a successful authorization step completed by one user affects the authorization requirement for a different user.

Patch / fix

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • openldap Debian 14, Debian 13, Debian 12 2.4.48+dfsg-1

debian advisories DEBIAN-CVE-2019-13565

  • openldap Ubuntu 16.04 LTS 2.4.42+dfsg-2ubuntu3.6
  • openldap Ubuntu 18.04 LTS 2.4.45+dfsg-1ubuntu1.3
  • openldap Ubuntu Pro 14.04 LTS 2.4.31-1+nmu2ubuntu8.5+esm1

ubuntu advisories UBUNTU-CVE-2019-13565

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openldap2 SLES for SAP 12 SP5, SLES for SAP 12 SP4, SLES for SAP 12 SP3 +4 more 2.4.41-18.24.17.1
  • openldap2-client-openssl1 SLES 11-SECURITY 2.4.26-0.74.6.1
  • openldap2 SLE Module for Legacy 15 SP1, SLE Module for Legacy 15, SLE Module for Development Tools 15 SP1 +3 more 2.4.46-9.19.2
  • openldap2 SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 +1 more 2.4.41-18.63.1
  • openldap2-client SLES for SAP 12 SP1, SLES 12 SP1-LTSS 2.4.41-18.24.17.1

suse advisories SUSE-SU-2020:1210-1SUSE-SU-2020:14353-1SUSE-SU-2019:2395-1SUSE-SU-2019:2390-1

  • openldap2 openSUSE Leap 15.0 2.4.46-lp150.13.1
  • openldap2 openSUSE Leap 15.1 2.4.46-lp151.10.3.1

opensuse advisories openSUSE-SU-2019:2176-1openSUSE-SU-2019:2157-1

  • openldap Alpine 3.24, Alpine 3.23, Alpine 3.22 +15 more 2.4.48-r0

alpine advisories ALPINE-CVE-2019-13565

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-13565 updated cvss 7.4

openldap: ACL restrictions bypass due to sasl_ssf value being set permanently

  • Red Hat Enterprise Linux 5 openldap Red Hat Enterprise Linux 6 openldap, openldap-clients, openldap-servers, openldap-servers-sql
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 openldap, openldap-clients, openldap-servers, openldap-servers-sql
    affected: no fix planned “Will not fix”
  • Red Hat JBoss Core Services openldap Red Hat JBoss Enterprise Application Platform 5 openldap Red Hat JBoss Enterprise Web Server 2 openldap
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 6 compat-openldap Red Hat Enterprise Linux 7 compat-openldap Red Hat Enterprise Linux 8 openldap, openldap-clients, openldap-servers
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-348-10 updated cvss 7.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

5.01% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.