CVE-2023-24998 is a high-severity vulnerability affecting certain versions of Apache Commons FileUpload and Apache Tomcat. This vulnerability allows attackers to trigger a Denial of Service (DoS) attack by uploading malicious files or a series of files. The affected systems include Apache Commons FileUpload versions before 1.5 and specific versions of Apache Tomcat. To mitigate this vulnerability, it is recommended to upgrade to Apache Commons FileUpload 1.5 or later and update the affected versions of Apache Tomcat. The vulnerability is exploitable remotely, making it crucial for users to take necessary precautions.

How do I know if I'm affected?

If you're using Apache Commons FileUpload versions between 1.0 and 1.4, or Apache Tomcat versions before 8.5.88, 9.0.74, and 10.1.8, you might be affected by the vulnerability. This vulnerability allows attackers to cause a Denial of Service (DoS) attack by uploading malicious files or a series of files. To check if you're affected, look for signs of a DoS attack, such as slow system performance or unresponsiveness. Note that this vulnerability does not impact any Apple product versions.

What should I do if I'm affected?

If you're affected by the vulnerability, take these steps to protect your system. First, upgrade to Apache Commons FileUpload 1.5 or later. Then, update Apache Tomcat to versions 8.5.88, 9.0.74, or 10.1.8 and above. Lastly, monitor your system for signs of a Denial of Service (DoS) attack.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2023-24998 vulnerability is not mentioned as being part of CISA's Known Exploited Vulnerabilities Catalog. This high-severity vulnerability affects certain versions of Apache Commons FileUpload and Apache Tomcat, allowing attackers to trigger a Denial of Service (DoS) attack by uploading malicious files.

Weakness enumeration

The weakness enumeration for this vulnerability is categorized as CWE-770, which related to resource allocation without limits, allowing attackers to trigger a Denial of Service (DoS) attack by uploading malicious files. Upgrading to Apache Commons FileUpload 1.5 or later can help mitigate this issue.

For more details

CVE-2023-24998 is a high-severity vulnerability affecting certain versions of Apache Commons FileUpload and Apache Tomcat, which can lead to a Denial of Service (DoS) attack. To better understand the vulnerability's description, severity, technical details, and known affected software configurations, you can refer to the NVD page or the links below.

• Apache Commons FileUpload Security Advisory

• Apache Tomcat: Multiple Vulnerabilities (Gentoo)

• Tomcat9 Security Update (Debian LTS)

• Tomcat9 Security Update (Debian Security) (1)