Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Apache HTTP Server vulnerabilities
Informations
Name USN-4113-1 First vendor Publication 2019-08-29
Vendor Ubuntu Last vendor Modification 2019-08-29
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.8 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Apache.

Software Description: - apache2: Apache HTTP server

Details:

Stefan Eissing discovered that the HTTP/2 implementation in Apache did not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in some situations. A remote attacker could use this to cause a denial of service (daemon crash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-0197)

Craig Young discovered that a memory overwrite error existed in Apache when performing HTTP/2 very early pushes in some situations. A remote attacker could use this to cause a denial of service (daemon crash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10081)

Craig Young discovered that a read-after-free error existed in the HTTP/2 implementation in Apache during connection shutdown. A remote attacker could use this to possibly cause a denial of service (daemon crash) or possibly expose sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10082)

Matei Badanoiu discovered that the mod_proxy component of Apache did not properly filter URLs when reporting errors in some configurations. A remote attacker could possibly use this issue to conduct cross-site scripting (XSS) attacks. (CVE-2019-10092)

Daniel McCarney discovered that mod_remoteip component of Apache contained a stack buffer overflow when parsing headers from a trusted intermediary proxy in some situations. A remote attacker controlling a trusted proxy could use this to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 19.04. (CVE-2019-10097)

Yukitsugu Sasaki discovered that the mod_rewrite component in Apache was vulnerable to open redirects in some situations. A remote attacker could use this to possibly expose sensitive information or bypass intended restrictions. (CVE-2019-10098)

Jonathan Looney discovered that the HTTP/2 implementation in Apache did not properly limit the amount of buffering for client connections in some situations. A remote attacker could use this to cause a denial of service (unresponsive daemon). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-9517)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04:
apache2 2.4.38-2ubuntu2.2
apache2-bin 2.4.38-2ubuntu2.2

Ubuntu 18.04 LTS:
apache2 2.4.29-1ubuntu4.10
apache2-bin 2.4.29-1ubuntu4.10

Ubuntu 16.04 LTS:
apache2 2.4.18-2ubuntu3.12
apache2-bin 2.4.18-2ubuntu3.12

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4113-1
CVE-2019-0197, CVE-2019-10081, CVE-2019-10082, CVE-2019-10092,
CVE-2019-10097, CVE-2019-10098, CVE-2019-9517

Package Information:
https://launchpad.net/ubuntu/+source/apache2/2.4.38-2ubuntu2.2
https://launchpad.net/ubuntu/+source/apache2/2.4.29-1ubuntu4.10
https://launchpad.net/ubuntu/+source/apache2/2.4.18-2ubuntu3.12

Original Source

Url : http://www.ubuntu.com/usn/USN-4113-1

CWE : Common Weakness Enumeration

% Id Name
25 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)
12 % CWE-770 Allocation of Resources Without Limits or Throttling
12 % CWE-601 URL Redirection to Untrusted Site ('Open Redirect') (CWE/SANS Top 25)
12 % CWE-476 NULL Pointer Dereference
12 % CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
12 % CWE-416 Use After Free
12 % CWE-79 Failure to Preserve Web Page Structure ('Cross-site Scripting') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 244
Application 12
Application 107
Application 4
Application 2
Application 2
Application 1
Os 3
Os 3
Os 1
Os 12
Os 2
Os 1

Snort® IPS/IDS

Date Description
2021-01-12 Apache Server mod_proxy Error Page cross site scripting attempt
RuleID : 56563 - Revision : 1 - Type : SERVER-WEBAPP
2020-01-21 Apache httpd mod_remoteip heap buffer overflow attempt
RuleID : 52494 - Revision : 1 - Type : SERVER-APACHE

Alert History

If you want to see full details history, please login or register.
0
1
2
Date Informations
2019-10-01 01:13:17
  • Multiple Updates
2019-09-25 12:14:44
  • Multiple Updates
2019-08-30 05:19:00
  • First insertion