CVE-2019-19906 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

http://seclists.org/fulldisclosure/2020/Jul/23 http://seclists.org/fulldisclosure/2020/Jul/24 https://github.com/cyrusimap/cyrus-sasl/issues/587 https://lists.debian.org/debian-lts-announce/2019/12/msg00027.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MW6GZCLECGL2PBNHVNPJIX4RPVRVFR7R/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OB4GSVOJ6ESHQNT5GSV63OX5D4KPSTGT/ https://seclists.org/bugtraq/2019/Dec/42 https://support.apple.com/kb/HT211288 https://support.apple.com/kb/HT211289 https://usn.ubuntu.com/4256-1/ https://www.debian.org/security/2019/dsa-4591 https://www.openldap.org/its/index.cgi/Incoming?id=9123

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5