CVE-2019-19906 describes an unauthenticated remote denial-of-service vulnerability in cyrus-sasl 2.1.27, affecting products like OpenLDAP, Apache, Apple, and Red Hat. This high-severity flaw (CVSS 7.5) stems from an off-by-one error leading to an out-of-bounds write, allowing attackers to crash services via a malformed LDAP packet without authentication. While no public exploit code or active exploitation has been observed, the vulnerability has garnered some community discussion, with a fix released in Cyrus SASL 2.1.28.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.1.28CPE matchmatch criteria | cpe:2.3:a:cyrusimap:cyrus-sasl:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
12.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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CVE-2019-19906
Aug 11, 2020cyrus-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.
Dec 10, 2019cyrus-sasl: denial of service in _sasl_add_string function
Nov 28, 2019