High severity7.5NVD Advisory· Published Dec 19, 2019· Updated Jun 17, 2026

CVE-2019-19906

Description

cyrus-sasl (aka Cyrus SASL) 2.1.27 has an out-of-bounds write leading to unauthenticated remote denial-of-service in OpenLDAP via a malformed LDAP packet. The OpenLDAP crash is ultimately caused by an off-by-one error in _sasl_add_string in common.c in cyrus-sasl.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

118

Apache/Bookkeeper
cpe:2.3:a:apache:bookkeeper:4.12.1:*:*:*:*:*:*:*
Carnegie Mellon University/Cyrus Sasl
cpe:2.3:a:cyrusimap:cyrus-sasl:*:*:*:*:*:*:*:*
Range: <2.1.28
Red Hat/Jboss Enterprise Web Server
cpe:2.3:a:redhat:jboss_enterprise_web_server:2.0.0:*:*:*:*:*:*:*
Apple Inc./Ipados
cpe:2.3:o:apple:ipados:13.6:*:*:*:*:*:*:*
Apple Inc./Iphone OS
cpe:2.3:o:apple:iphone_os:13.6:*:*:*:*:*:*:*
Apple Inc./Mac OS X24 versions
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*+ 23 more
- cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*range: <10.13.6
- cpe:2.3:o:apple:mac_os_x:10.13.6:-:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2018-003:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-003:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-004:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-005:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-006:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2019-007:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.13.6:security_update_2020-003:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:-:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-004:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-005:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-006:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2019-007:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-001:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-002:*:*:*:*:*:*
- cpe:2.3:o:apple:mac_os_x:10.14.6:security_update_2020-003:*:*:*:*:*:*
Canonical/Ubuntu Linux5 versions
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*+ 4 more
- cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
Debian/linux3 versions
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Fedoraproject/Fedora2 versions
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server4 versions
cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:redhat:enterprise_linux:5.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Eus
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*
Red Hat/Enterprise Linux For Ibm Z Systems
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
Red Hat/Enterprise Linux For Ibm Z Systems Eus
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*
Red Hat/Enterprise Linux For Power Little Endian
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
Red Hat/Enterprise Linux For Power Little Endian Eus
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Aus
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Tus
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*
Red Hat/Enterprise Linux Server Update Services For Sap Solutions
cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*
Cyrus SASL/cyrus-sasldescription
Cyrus SASL/Cyrus SASL libraryllm-fuzzy
Range: <=2.1.27
osv-coords64 versions
pkg:rpm/almalinux/cyrus-sasl-sql pkg:rpm/opensuse/cyrus-sasl&distro=openSUSE%20Tumbleweed pkg:rpm/suse/cyrus-sasl&distro=HPE%20Helion%20OpenStack%208 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Enterprise%20Storage%205 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Enterprise%20Storage%206 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCL pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCL pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCL pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2012%20SP5 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20Manager%20Server%204.1 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20OpenStack%20Cloud%207 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20OpenStack%20Cloud%208 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20OpenStack%20Cloud%209 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208 pkg:rpm/suse/cyrus-sasl&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209 pkg:rpm/suse/cyrus-sasl-openssl1&distro=SUSE%20Linux%20Enterprise%20Server%2011-SECURITY pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Enterprise%20Storage%206 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Enterprise%20Storage%207 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCL pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCL pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSS pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Manager%20Proxy%204.1 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1 pkg:rpm/suse/cyrus-sasl-saslauthd&distro=SUSE%20Manager%20Server%204.1
< 2.1.27-5.el8+ 63 more
- (no CPE)range: < 2.1.27-5.el8
- (no CPE)range: < 2.1.27-5.7
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.22-182.26.4.1
- (no CPE)range: < 2.1.22-182.26.4.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.26-8.13.1
- (no CPE)range: < 2.1.22-182.26.4.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.22-182.26.4.1
- (no CPE)range: < 2.1.22-182.26.4.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1
- (no CPE)range: < 2.1.26-150000.5.13.1

Patches

Vulnerability mechanics

References

www.openwall.com/lists/oss-security/2022/02/23/4nvdMailing ListPatchRelease NotesThird Party Advisory
github.com/cyrusimap/cyrus-sasl/issues/587nvdPatchThird Party Advisory
usn.ubuntu.com/4256-1/nvdPatchThird Party Advisory
www.openldap.org/its/index.cgi/IncomingnvdExploitThird Party Advisory
seclists.org/fulldisclosure/2020/Jul/23nvdMailing ListThird Party Advisory
seclists.org/fulldisclosure/2020/Jul/24nvdMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2019/12/msg00027.htmlnvdMailing ListThird Party Advisory
seclists.org/bugtraq/2019/Dec/42nvdMailing ListThird Party Advisory
support.apple.com/kb/HT211288nvdThird Party Advisory
support.apple.com/kb/HT211289nvdThird Party Advisory
www.debian.org/security/2019/dsa-4591nvdThird Party Advisory
lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Envd
lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Envd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MW6GZCLECGL2PBNHVNPJIX4RPVRVFR7R/nvd
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OB4GSVOJ6ESHQNT5GSV63OX5D4KPSTGT/nvd

News mentions

No linked articles in our index yet.

cvss	0.488
epss	0.006
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000