Amazon Linux AMI update for tomcat7

Published: 2017-08-17

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2017-5664 CVE-2017-5648
CWE-ID	CWE-20 CWE-284
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Amazon Linux AMI Operating systems & Components / Operating system
Vendor	Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Security bypass

EUVDB-ID: #VU6950

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-5664

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to improper handling of certain HTTP request methods for static error pages in Default Servlet. A remote attacker can bypass HTTP method restrictions and cause the error page to be deleted or replaced.

Successful exploitation of the vulnerability results in information modification.

Mitigation

Update the affected packages.

noarch:
    tomcat7-admin-webapps-7.0.79-1.28.amzn1.noarch
    tomcat7-jsp-2.2-api-7.0.79-1.28.amzn1.noarch
    tomcat7-webapps-7.0.79-1.28.amzn1.noarch
    tomcat7-lib-7.0.79-1.28.amzn1.noarch
    tomcat7-7.0.79-1.28.amzn1.noarch
    tomcat7-el-2.2-api-7.0.79-1.28.amzn1.noarch
    tomcat7-servlet-3.0-api-7.0.79-1.28.amzn1.noarch
    tomcat7-docs-webapp-7.0.79-1.28.amzn1.noarch
    tomcat7-log4j-7.0.79-1.28.amzn1.noarch
    tomcat7-javadoc-7.0.79-1.28.amzn1.noarch

src:
    tomcat7-7.0.79-1.28.amzn1.src

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*

External links

https://alas.aws.amazon.com/ALAS-2017-873.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Security restrictions bypass

EUVDB-ID: #VU6675