Improper JWT Signature Validation in SAP Security Services Library
### Impact 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. ### Patches Upgrade to patched version >= 2.17.0 or >= 3.3.0 We always recommend to upgrade to the latest released version. ### Workarounds No workarounds ### References https://www.cve.org/CVERecord?id=CVE-2023-50422
describes (2)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-50424US | critical9.8 | — | ||
SAP BTP Security Services Integration Library ([Golang] github.com/sap/cloud-security-client-go) - versions < 0.17.0, allow under certain conditions an escalation of privileges. On… | ||||
| CVE-2023-50422US | critical9.8 | — | ||
SAP BTP Security Services Integration Library ([Java] cloud-security-services-integration-library) - versions below 2.17.0 and versions from 3.0.0 to before 3.3.0, allow under cert… | ||||
references
External citations — patches, advisories, analysis.
- https://blogs.sap.com/2023/12/12/unveiling-critical-security-updates-sap-btp-security-note-3411067WEB
- https://en.wikipedia.org/wiki/JSON_Web_TokenWEB
- https://github.com/SAP/cloud-security-services-integration-libraryPACKAGE
- https://github.com/SAP/cloud-security-services-integration-library/commit/4b3e42ab23df6418243b29908b1a2582818d9360WEB
- https://github.com/SAP/cloud-security-services-integration-library/commit/7ce9601979c30ae269a1cbaf7cf33486d10736f1WEB
- https://github.com/SAP/cloud-security-services-integration-library/security/advisories/GHSA-59c9-pxq8-9c73WEB
- https://me.sap.com/notes/3411067WEB
- https://me.sap.com/notes/3413475WEB
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