Apache Commons FileUpload, Apache Tomcat: FileUpload DoS with excessive parts
CVE-2023-24998

7.5HIGH

Key Information:

Vendor
Apache
Status
Apache Commons Fileupload
Apache Tomcat
Vendor
CVE Published:
20 February 2023

Badges

πŸ‘Ύ Exploit Exists🟑 Public PoC

Summary

The Apache Commons FileUpload before version 1.5 is susceptible to a Denial of Service attack due to its failure to restrict the number of parts processed in a request. This oversight allows an attacker to exploit the system by making malicious uploads or sending a series of uploads, potentially overwhelming the application. Additionally, the new configuration option, FileUploadBase#setFileCountMax, which addresses this issue by limiting the number of request parts, is not enabled by default and requires explicit configuration to safeguard against these attacks.

Affected Version(s)

Apache Commons FileUpload 0 < 1.5

Apache Tomcat 11.0.0-M1

Apache Tomcat 10.0.0-M1 <= 10.1.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-24998
Created by nice1st

References

https://lists.apache.org/thread/4xl4l09mhwg4vgsk7dxqogcjr...
vendor-advisory
http://www.openwall.com/lists/oss-security/2023/05/22/1
https://security.gentoo.org/glsa/202305-37

EPSS Score

1% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟑

    Public PoC available

  • πŸ‘Ύ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jakob Ackermann
.