Amazon Linux AMI update for tomcat9



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-28709
CVE-2023-24998
CWE-ID CWE-770
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
 Amazon Linux AMI
Operating systems & Components / Operating system

tomcat9
Operating systems & Components / Operating system package or component

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU76417

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-28709

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an incomplete fox for #VU72427 (CVE-2023-24998). If non-default HTTP connector settings were used such that the maxParameterCount could be reached using query string parameters and a request was submitted that supplied exactly maxParameterCount parameters in the query string, the limit for uploaded request parts could be bypassed. A remote attacker can initiate a series of uploads and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

noarch:
    tomcat9-lib-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-jsp-2.3-api-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-servlet-4.0-api-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-admin-webapps-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-webapps-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-el-3.0-api-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-docs-webapp-9.0.71-1.amzn2023.0.3.noarch

src:
    tomcat9-9.0.71-1.amzn2023.0.3.src

Vulnerable software versions

Amazon Linux AMI: All versions

tomcat9: before 9.0.71-1

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-238.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) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU72427

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2023-24998

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to Apache Commons FileUpload does not limit the number of request parts. A remote attacker can initiate a series of uploads and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages:

noarch:
    tomcat9-lib-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-jsp-2.3-api-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-servlet-4.0-api-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-admin-webapps-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-webapps-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-el-3.0-api-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-9.0.71-1.amzn2023.0.3.noarch
    tomcat9-docs-webapp-9.0.71-1.amzn2023.0.3.noarch

src:
    tomcat9-9.0.71-1.amzn2023.0.3.src

Vulnerable software versions

Amazon Linux AMI: All versions

tomcat9: before 9.0.71-1

CPE2.3 External links

https://alas.aws.amazon.com/AL2023/ALAS-2023-238.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. However, proof of concept for this vulnerability is available.



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