CVE-2019-19906

HIGH

cyrus-sasl < 2.1.28 - Unauthenticated Denial of Service via Malformed LDAP Packet

Title source: llm
STIX 2.1

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.

References (15)

Core 15
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/cyrusimap/cyrus-sasl/issues/587
Exploit, Third Party Advisory x_refsource_misc
https://www.openldap.org/its/index.cgi/Incoming?id=9123
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/12/msg00027.html
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2019/dsa-4591
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2019/Dec/42
Patch, Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4256-1/
Third Party Advisory x_refsource_confirm
https://support.apple.com/kb/HT211288
Third Party Advisory x_refsource_confirm
https://support.apple.com/kb/HT211289
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Jul/24
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Jul/23
Mailing List, Patch, Release Notes, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2022/02/23/4

Scores

CVSS v3 7.5
EPSS 0.0804
EPSS Percentile 94.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-193 CWE-787
Status published
Products (29)
apache/bookkeeper 4.12.1
apple/ipados 13.6
apple/iphone_os 13.6
apple/mac_os_x 10.14.6 (10 CPE variants)
apple/mac_os_x 10.13.6 (13 CPE variants)
apple/mac_os_x < 10.13.6
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
canonical/ubuntu_linux 16.04
canonical/ubuntu_linux 18.04
... and 19 more
Published Dec 19, 2019
Tracked Since Feb 18, 2026