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SUSE SLED15 / SLES15 Security Update : apache2 (SUSE-SU-2019:0873-1)

high Nessus Plugin ID 123782

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Synopsis

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

Description

This update for apache2 fixes the following issues :

CVE-2019-0211: A flaw in the Apache HTTP Server allowed less-privileged child processes or threads to execute arbitrary code with the privileges of the parent process. Attackers with control over CGI scripts or extension modules run by the server could have abused this issue to potentially gain super user privileges. [bsc#1131233]

CVE-2019-0220: The Apache HTTP server did not use a consistent strategy for URL normalization throughout all of its components. In particular, consecutive slashes were not always collapsed. Attackers could potentially abuse these inconsistencies to by-pass access control mechanisms and thus gain unauthorized access to protected parts of the service. [bsc#1131241]

CVE-2019-0217: A race condition in Apache's 'mod_auth_digest' when running in a threaded server could have allowed users with valid credentials to authenticate using another username, bypassing configured access control restrictions. [bsc#1131239]

CVE-2019-0197: When HTTP/2 support was enabled in the Apache server for a 'http' host or H2Upgrade was enabled for h2 on a 'https' host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash.
This issue could have been abused to mount a denial-of-service attack.
Servers that never enabled the h2 protocol or that only enabled it for https: and did not configure the 'H2Upgrade on' are unaffected.
[bsc#1131245]

CVE-2019-0196: Through specially crafted network input the Apache's http/2 request handler could be lead to access previously freed memory while determining the method of a request. This resulted in the request being misclassified and thus being processed incorrectly.
[bsc#1131237]

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

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Module for Server Applications 15:zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-873=1

SUSE Linux Enterprise Module for Open Buildservice Development Tools 15:zypper in -t patch SUSE-SLE-Module-Development-Tools-OBS-15-2019-873=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1131233

https://bugzilla.suse.com/show_bug.cgi?id=1131237

https://bugzilla.suse.com/show_bug.cgi?id=1131239

https://bugzilla.suse.com/show_bug.cgi?id=1131241

https://bugzilla.suse.com/show_bug.cgi?id=1131245

https://www.suse.com/security/cve/CVE-2019-0196/

https://www.suse.com/security/cve/CVE-2019-0197/

https://www.suse.com/security/cve/CVE-2019-0211/

https://www.suse.com/security/cve/CVE-2019-0217/

https://www.suse.com/security/cve/CVE-2019-0220/

http://www.nessus.org/u?e2aa985a

Plugin Details

Severity: High

ID: 123782

File Name: suse_SU-2019-0873-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 4/5/2019

Updated: 4/25/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6

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

CVSS Score Source: CVE-2019-0211

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.2

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:apache2-devel, p-cpe:/a:novell:suse_linux:apache2-debuginfo, p-cpe:/a:novell:suse_linux:apache2-prefork, p-cpe:/a:novell:suse_linux:apache2, p-cpe:/a:novell:suse_linux:apache2-event, p-cpe:/a:novell:suse_linux:apache2-utils, p-cpe:/a:novell:suse_linux:apache2-worker-debuginfo, p-cpe:/a:novell:suse_linux:apache2-utils-debuginfo, p-cpe:/a:novell:suse_linux:apache2-prefork-debuginfo, p-cpe:/a:novell:suse_linux:apache2-worker, p-cpe:/a:novell:suse_linux:apache2-event-debuginfo, p-cpe:/a:novell:suse_linux:apache2-example-pages, p-cpe:/a:novell:suse_linux:apache2-debugsource, cpe:/o:novell:suse_linux:15

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/4/2019

Vulnerability Publication Date: 4/8/2019

CISA Known Exploited Vulnerability Due Dates: 5/3/2022

Reference Information

CVE: CVE-2019-0196, CVE-2019-0197, CVE-2019-0211, CVE-2019-0217, CVE-2019-0220