QID 353990

Date Published: 2022-07-25

QID 353990: Amazon Linux Security Advisory for 389-ds-base : ALAS2-2022-1819

A double free was found in the way 389-ds-base handles virtual attributes context in persistent searches.
An attacker could send a series of search requests, forcing the server to behave unexpectedly, and crash. (
( CVE-2021-4091) a vulnerability was found in the 389 directory server that allows an unauthenticated attacker with network access to the ldap port to cause a denial of service.
The denial of service is triggered by a single message sent over a tcp connection.
No bind or other authentication is required.
This message triggers a segmentation fault that results in slapd crashing. (
( CVE-2022-0918) a vulnerability was found in the 389 directory server.
This issue allows expired passwords to access the database, causing improper authentication. (
( CVE-2022-0996)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2022-1819 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 353990

    CVE-2022-0996 | CVE-2022-0918 | CVE-2021-4091 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2022-1819 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2022-1819.html
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