high
7.5
CWE
400 917 20 770
Advisory Published
Advisory Published
Updated

CVE-2023-20863: Input Validation

First published: Thu Apr 13 2023(Updated: )

A flaw was found in Spring Framework. Certain versions of Spring Framework's Expression Language were not restricting the size of Spring Expressions. This could allow an attacker to craft a malicious Spring Expression to cause a denial of service on the server.

Credit: security@vmware.com security@vmware.com

Affected SoftwareAffected VersionHow to fix
VMware Spring Framework>=5.2.0<5.2.24
VMware Spring Framework>=5.3.0<5.3.27
VMware Spring Framework>=6.0.0<6.0.8
IBM Watson Knowledge Catalog on-prem<=4.x
redhat/spring framework<6.0.8
6.0.8
redhat/spring framework<5.3.27
5.3.27
redhat/spring framework<5.2.24.
5.2.24.
maven/org.springframework:spring-expression<5.2.24.RELEASE
5.2.24.RELEASE
maven/org.springframework:spring-expression>=5.3.0<5.3.27
5.3.27
maven/org.springframework:spring-expression>=6.0.0<6.0.8
6.0.8

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability CVE-2023-20863?

    CVE-2023-20863 is a flaw in Spring Framework where certain versions of Spring Framework's Expression Language do not restrict the size of Spring Expressions, allowing an attacker to cause a denial of service on the server.

  • What is the severity of CVE-2023-20863?

    The severity of CVE-2023-20863 is medium with a CVSS score of 6.5.

  • Which versions of Spring Framework are affected by CVE-2023-20863?

    Versions of Spring Framework prior to 5.2.24, 5.3.27, and 6.0.8 are affected by CVE-2023-20863.

  • How can I fix CVE-2023-20863?

    To fix CVE-2023-20863, update your Spring Framework to version 5.2.24, 5.3.27, or 6.0.8.

  • Where can I find more information about CVE-2023-20863?

    You can find more information about CVE-2023-20863 at the following references: [CVE-2023-20863](https://www.cve.org/CVERecord?id=CVE-2023-20863), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-20863), [Spring Security](https://spring.io/security/cve-2023-20863), [Red Hat Bugzilla](https://bugzilla.redhat.com/show_bug.cgi?id=2187742), [Red Hat Security Advisory](https://access.redhat.com/errata/RHSA-2023:2099).

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