ALAS2023-2026-1880

References: CVE-2026-29167  CVE-2026-29170  CVE-2026-34355  CVE-2026-34356  CVE-2026-42535  CVE-2026-42536  CVE-2026-43951  CVE-2026-44119  CVE-2026-44185  CVE-2026-44186  CVE-2026-44631 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

Use After Free vulnerability in Apache HTTP Server with mod_ldap in per-directory configuration

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-29167)

A cross-site scripting vulnerability exists in mod_proxy_ftp's HTML directory list generation in Apache HTTP Server 2.4.67 and earlier when listing FTP directory contents either via forward or reverse proxy configuration.

Users are recommended to upgrade to version 2.4.68, which fixes this issue. (CVE-2026-29170)

A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend.
Users are recommended to upgrade to version 2.4.68, which fixes this issue. (CVE-2026-34355)

Heap-based Buffer Overflow vulnerability in Apache HTTP Server with malicious backend servers and ProxyPassReverseCookie*

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-34356)

A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes.

Users are recommended to upgrade to version 2.4.68, which fixes this issue. (CVE-2026-42535)

Heap-based Buffer Overflow vulnerability in Apache HTTP Server with mod_xml2enc, xml2StartParse, and untrusted content

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-42536)

Out-of-bounds Read vulnerability in Apache HTTP Server with mod_headers and mod_mime and multiple response languages.

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67. (CVE-2026-43951)

Improper Privilege Management vulnerability in Apache HTTP Server 2.4.67 and earlier allows local .htaccess authors to read files with the privileges of the httpd user.

This issue affects Apache HTTP Server: from through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44119)

Buffer Over-read vulnerability in Apache HTTP Server via outbound OCSP requests to an attacker controlled OCSP server

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44185)

Loop with Unreachable Exit Condition ('Infinite Loop') vulnerability in the mod_proxy_ftp module in Apache HTTP Server with an attacker controlled backend FTP server.

This issue affects undefined: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44186)

Buffer Underwrite vulnerability in Apache HTTP Server on crafted regular expressions in the configuration.

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.

Users are recommended to upgrade to version 2.4.68, which fixes the issue. (CVE-2026-44631)

Issue Correction:
Run dnf update httpd --releasever 2023.12.20260622 or dnf update --advisory ALAS2023-2026-1880 --releasever 2023.12.20260622 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    mod_lua-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    mod_proxy_html-2.4.68-1.amzn2023.0.1.aarch64
    mod_ssl-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    mod_session-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    httpd-devel-2.4.68-1.amzn2023.0.1.aarch64
    mod_ldap-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    httpd-tools-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    mod_ldap-2.4.68-1.amzn2023.0.1.aarch64
    mod_lua-2.4.68-1.amzn2023.0.1.aarch64
    mod_ssl-2.4.68-1.amzn2023.0.1.aarch64
    mod_session-2.4.68-1.amzn2023.0.1.aarch64
    httpd-core-2.4.68-1.amzn2023.0.1.aarch64
    mod_proxy_html-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    httpd-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    httpd-debugsource-2.4.68-1.amzn2023.0.1.aarch64
    httpd-core-debuginfo-2.4.68-1.amzn2023.0.1.aarch64
    httpd-2.4.68-1.amzn2023.0.1.aarch64
    httpd-tools-2.4.68-1.amzn2023.0.1.aarch64

noarch:
    httpd-manual-2.4.68-1.amzn2023.0.1.noarch
    httpd-filesystem-2.4.68-1.amzn2023.0.1.noarch

src:
    httpd-2.4.68-1.amzn2023.0.1.src

x86_64:
    mod_lua-2.4.68-1.amzn2023.0.1.x86_64
    mod_session-2.4.68-1.amzn2023.0.1.x86_64
    httpd-debugsource-2.4.68-1.amzn2023.0.1.x86_64
    httpd-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    mod_session-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    httpd-tools-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    mod_lua-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    mod_proxy_html-2.4.68-1.amzn2023.0.1.x86_64
    httpd-devel-2.4.68-1.amzn2023.0.1.x86_64
    httpd-core-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    httpd-tools-2.4.68-1.amzn2023.0.1.x86_64
    mod_proxy_html-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    mod_ldap-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    mod_ssl-2.4.68-1.amzn2023.0.1.x86_64
    mod_ssl-debuginfo-2.4.68-1.amzn2023.0.1.x86_64
    httpd-2.4.68-1.amzn2023.0.1.x86_64
    mod_ldap-2.4.68-1.amzn2023.0.1.x86_64
    httpd-core-2.4.68-1.amzn2023.0.1.x86_64