Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 18.10 : apache2 vulnerabilities (USN-3937-1)

high Nessus Plugin ID 123787

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Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

Charles Fol discovered that the Apache HTTP Server incorrectly handled the scoreboard shared memory area. A remote attacker able to upload and run scripts could possibly use this issue to execute arbitrary code with root privileges. (CVE-2019-0211)

It was discovered that the Apache HTTP Server HTTP/2 module incorrectly handled certain requests. A remote attacker could possibly use this issue to cause the server to consume resources, leading to a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10. (CVE-2018-17189)

It was discovered that the Apache HTTP Server incorrectly handled session expiry times. When used with mod_session_cookie, this may result in the session expiry time to be ignored, contrary to expectations. (CVE-2018-17199)

Craig Young discovered that the Apache HTTP Server HTTP/2 module incorrectly handled certain requests. A remote attacker could possibly use this issue to cause the server to process requests incorrectly.
This issue only affected Ubuntu 18.04 LTS and Ubuntu 18.10.
(CVE-2019-0196)

Simon Kappel discovered that the Apache HTTP Server mod_auth_digest module incorrectly handled threads. A remote attacker with valid credentials could possibly use this issue to authenticate using another username, bypassing access control restrictions.
(CVE-2019-0217)

Bernhard Lorenz discovered that the Apache HTTP Server was inconsistent when processing requests containing multiple consecutive slashes. This could lead to directives such as LocationMatch and RewriteRule to perform contrary to expectations. (CVE-2019-0220).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected apache2-bin package.

See Also

https://usn.ubuntu.com/3937-1/

Plugin Details

Severity: High

ID: 123787

File Name: ubuntu_USN-3937-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 4/5/2019

Updated: 9/18/2019

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:apache2-bin, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.10

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: 4/4/2019

Vulnerability Publication Date: 1/30/2019

Reference Information

CVE: CVE-2018-17189, CVE-2018-17199, CVE-2019-0196, CVE-2019-0211, CVE-2019-0217, CVE-2019-0220

USN: 3937-1