Out-of-bounds Write

Affecting cyrus-sasl package, versions <2.1.27-r2

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Overview

Affected versions of this package are vulnerable to Out-of-bounds Write 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.

Remediation

Upgrade cyrus-sasl to version or higher.

References

CVSS Score

7.5
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE
CVE-2019-19906
CWE
CWE-787
Snyk ID
SNYK-ALPINE39-CYRUSSASL-589390
Disclosed
19 Dec, 2019
Published
19 Dec, 2019