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CVE-2023-50422: Improper JWT Signature Validation in SAP Security Services Library

December 13, 2023 (updated September 30, 2024)

SAP BTP Security Services Integration Library ([Java] cloud-security-services-integration-library) allows under certain conditions an escalation of privileges. On successful exploitation, an unauthenticated attacker can obtain arbitrary permissions within the application.

References

  • blogs.sap.com/2023/12/12/unveiling-critical-security-updates-sap-btp-security-note-3411067
  • en.wikipedia.org/wiki/JSON_Web_Token
  • github.com/SAP/cloud-security-services-integration-library
  • github.com/SAP/cloud-security-services-integration-library/commit/4b3e42ab23df6418243b29908b1a2582818d9360
  • github.com/SAP/cloud-security-services-integration-library/commit/7ce9601979c30ae269a1cbaf7cf33486d10736f1
  • github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-59c9-pxq8-9c73
  • github.com/advisories/GHSA-59c9-pxq8-9c73
  • me.sap.com/notes/3411067
  • me.sap.com/notes/3413475
  • mvnrepository.com/artifact/com.sap.cloud.security.xsuaa/spring-xsuaa
  • mvnrepository.com/artifact/com.sap.cloud.security/java-security
  • mvnrepository.com/artifact/com.sap.cloud.security/spring-security
  • nvd.nist.gov/vuln/detail/CVE-2023-50422
  • www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.html

Code Behaviors & Features

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Affected versions

All versions before 2.17.0, all versions starting from 3.0.0 before 3.3.0

Fixed versions

  • 2.17.0
  • 3.3.0

Solution

Upgrade to versions 2.17.0, 3.3.0 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-269: Improper Privilege Management

Source file

maven/com.sap.cloud.security.xsuaa/spring-xsuaa/CVE-2023-50422.yml

Spotted a mistake? Edit the file on GitLab.

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