Detections
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Amazon Linux 2 : openssl, --advisory ALAS2-2026-3274 (ALAS-2026-3274)
high Nessus Plugin ID 311203
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of openssl installed on the remote host is prior to 1.0.2k-24. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3274 advisory.NULL Pointer Dereference When Processing a Delta CRL
NOTE: https://openssl-library.org/news/secadv/20260407.txt (CVE-2026-28388)
Possible NULL dereference when processing CMS KeyAgreeRecipientInfo (CVE-2026-28389)
Possible NULL dereference when processing CMS KeyTransportRecipientInfo (CVE-2026-28390)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update openssl' or or 'yum update --advisory ALAS2-2026-3274' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2026-3274.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-28388.html
Plugin Details
Severity: High
ID: 311203
File Name: al2_ALAS-2026-3274.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 4/30/2026
Updated: 4/30/2026
Supported Sensors: Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 5.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2026-28390
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:openssl-debuginfo, p-cpe:/a:amazon:linux:openssl-perl, p-cpe:/a:amazon:linux:openssl-static, p-cpe:/a:amazon:linux:openssl-libs, p-cpe:/a:amazon:linux:openssl-devel, p-cpe:/a:amazon:linux:openssl
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 4/30/2026
Vulnerability Publication Date: 4/7/2026
Reference Information
CVE: CVE-2026-28388, CVE-2026-28389, CVE-2026-28390
IAVA: 2026-A-0308