Detections
Analytics

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / 26.10 / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS : Apache HTTP Server vulnerabilities (USN-9090-1)

high Nessus Plugin ID 381369

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS / 26.10 / Pro Realtime 22.04 LTS / Pro Realtime 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-9090-1 advisory.

 Zhenpeng Lin discovered that Apache HTTP Server's mod_dav module incorrectly calculated memory sizes when handling WebDAV locks. An attacker with permission to create WebDAV locks could possibly use this issue to cause Apache HTTP Server to crash, resulting in a denial of service. (CVE-2026-42528)

 It was discovered that Apache HTTP Server's mod_vhost_alias module incorrectly handled certain requests, leading to a one-byte stack buffer overflow. A remote attacker could possibly use this issue to cause Apache HTTP Server to crash, resulting in a denial of service, or possibly execute arbitrary code.
 (CVE-2026-109163)

 It was discovered that Apache HTTP Server's mod_md module incorrectly handled certain conditions, leading to a NULL pointer dereference. An attacker could possibly use this issue to cause Apache HTTP Server to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10. (CVE-2026-106023)

 It was discovered that Apache HTTP Server's mod_http2 module incorrectly handled certain request headers, leading to heap corruption. A remote attacker could possibly use this issue to cause Apache HTTP Server to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, Ubuntu 26.04 LTS, and Ubuntu 26.10.
 (CVE-2026-119618)

 Feliks Penconek, Yang Song, and JiaSheng He discovered that Apache HTTP Server could treat the target of some internal redirects from CGI programs as a CGI program. A remote attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 26.04 LTS and Ubuntu 26.10.
 (CVE-2026-42356)

Tenable has extracted the preceding description block directly from the Ubuntu 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

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-9090-1

Plugin Details

Severity: High

ID: 381369

File Name: ubuntu_USN-9090-1.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 11/14/2026

Updated: 11/14/2026

Supported Sensors: Continuous Assessment, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.9

Percentile: 99.33

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2026-119618

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.04:-:lts, cpe:/o:canonical:ubuntu_linux:26.10, p-cpe:/a:canonical:ubuntu_linux:apache2-bin, p-cpe:/a:canonical:ubuntu_linux:apache2-data, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-event, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-itk, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-prefork, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-worker, p-cpe:/a:canonical:ubuntu_linux:apache2-suexec-custom, p-cpe:/a:canonical:ubuntu_linux:apache2-suexec-pristine, p-cpe:/a:canonical:ubuntu_linux:apache2-suexec, p-cpe:/a:canonical:ubuntu_linux:apache2-utils, p-cpe:/a:canonical:ubuntu_linux:apache2.2-bin, p-cpe:/a:canonical:ubuntu_linux:apache2, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-macro, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-md, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-proxy-html, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-proxy-uwsgi

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/12/2026

Vulnerability Publication Date: 10/1/2026

Reference Information

CVE: CVE-2026-106023, CVE-2026-109163, CVE-2026-119618, CVE-2026-42356, CVE-2026-42528

IAVA: 2026-A-1087-S, 2026-A-1295

USN: 9090-1