Detections
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Amazon Linux 2023 : php8.5, php8.5-bcmath, php8.5-cli (ALAS2023-2026-3304)

critical Nessus Plugin ID 370303

Synopsis

The remote Amazon Linux 2023 host is missing a security update.

Description

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-3304 advisory.

 PHP uses longjmp() for out-of-memory (OOM) errors to exit the current context and abort handling of the request. Some contexts may not properly account for this scenario and leave request memory in an uninitialized state before performing an allocation. The subsequent request cleanup procedure may read or branch on this memory. Multiple OOM strategies can consistently trigger this condition and lead to remote code execution (RCE). (CVE-2026-109618)

 PHP has various global state that temporarily points into request memory. In some scenarios, global state may not be correctly reset, or may be repopulated after being reset. The global state may then refer to request memory even after it has been freed. Subsequent requests may read or branch on this stale state before it is fully initialized. Multiple strategies can trigger this condition and produce remote code execution (RCE). (CVE-2026-109619)

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.

See Also

https://alas.aws.amazon.com//AL2023/ALAS2023-2026-3304.html

https://alas.aws.amazon.com/faqs.html

https://explore.alas.aws.amazon.com/CVE-2026-109618.html

https://explore.alas.aws.amazon.com/CVE-2026-109619.html

Plugin Details

Severity: Critical

ID: 370303

File Name: al2023_ALAS2023-2026-3304.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/22/2026

Updated: 10/22/2026

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

Percentile: 99.77

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-109619

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 7.2

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:amazon:linux:2023, p-cpe:/a:amazon:linux:php8.5-bcmath-debuginfo, p-cpe:/a:amazon:linux:php8.5-bcmath, p-cpe:/a:amazon:linux:php8.5-cli-debuginfo, p-cpe:/a:amazon:linux:php8.5-cli, p-cpe:/a:amazon:linux:php8.5-common-debuginfo, p-cpe:/a:amazon:linux:php8.5-common, p-cpe:/a:amazon:linux:php8.5-dba-debuginfo, p-cpe:/a:amazon:linux:php8.5-dba, p-cpe:/a:amazon:linux:php8.5-dbg-debuginfo, p-cpe:/a:amazon:linux:php8.5-dbg, p-cpe:/a:amazon:linux:php8.5-debuginfo, p-cpe:/a:amazon:linux:php8.5-debugsource, p-cpe:/a:amazon:linux:php8.5-devel, p-cpe:/a:amazon:linux:php8.5-embedded-debuginfo, p-cpe:/a:amazon:linux:php8.5-embedded, p-cpe:/a:amazon:linux:php8.5-enchant-debuginfo, p-cpe:/a:amazon:linux:php8.5-enchant, p-cpe:/a:amazon:linux:php8.5-ffi-debuginfo, p-cpe:/a:amazon:linux:php8.5-ffi, p-cpe:/a:amazon:linux:php8.5-fpm-debuginfo, p-cpe:/a:amazon:linux:php8.5-fpm, p-cpe:/a:amazon:linux:php8.5-gd-debuginfo, p-cpe:/a:amazon:linux:php8.5-gd, p-cpe:/a:amazon:linux:php8.5-gmp-debuginfo, p-cpe:/a:amazon:linux:php8.5-gmp, p-cpe:/a:amazon:linux:php8.5-intl-debuginfo, p-cpe:/a:amazon:linux:php8.5-intl, p-cpe:/a:amazon:linux:php8.5-ldap-debuginfo, p-cpe:/a:amazon:linux:php8.5-ldap, p-cpe:/a:amazon:linux:php8.5-mbstring-debuginfo, p-cpe:/a:amazon:linux:php8.5-mbstring, p-cpe:/a:amazon:linux:php8.5-modphp-debuginfo, p-cpe:/a:amazon:linux:php8.5-modphp, p-cpe:/a:amazon:linux:php8.5-mysqlnd-debuginfo, p-cpe:/a:amazon:linux:php8.5-mysqlnd, p-cpe:/a:amazon:linux:php8.5-odbc-debuginfo, p-cpe:/a:amazon:linux:php8.5-odbc, p-cpe:/a:amazon:linux:php8.5-pdo-debuginfo, p-cpe:/a:amazon:linux:php8.5-pdo, p-cpe:/a:amazon:linux:php8.5-pgsql-debuginfo, p-cpe:/a:amazon:linux:php8.5-pgsql, p-cpe:/a:amazon:linux:php8.5-process-debuginfo, p-cpe:/a:amazon:linux:php8.5-process, p-cpe:/a:amazon:linux:php8.5-snmp-debuginfo, p-cpe:/a:amazon:linux:php8.5-snmp, p-cpe:/a:amazon:linux:php8.5-soap-debuginfo, p-cpe:/a:amazon:linux:php8.5-soap, p-cpe:/a:amazon:linux:php8.5-sodium-debuginfo, p-cpe:/a:amazon:linux:php8.5-sodium, p-cpe:/a:amazon:linux:php8.5-tidy-debuginfo, p-cpe:/a:amazon:linux:php8.5-tidy, p-cpe:/a:amazon:linux:php8.5-xml-debuginfo, p-cpe:/a:amazon:linux:php8.5-xml, p-cpe:/a:amazon:linux:php8.5-zip-debuginfo, p-cpe:/a:amazon:linux:php8.5-zip, p-cpe:/a:amazon:linux:php8.5

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 10/21/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-109618, CVE-2026-109619