CVE-2018-20840

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Summary

CVECVE-2018-20840
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-05-30 16:29:00 UTC
Updated2019-05-31 16:04:00 UTC
DescriptionAn unhandled exception vulnerability exists during Google Sign-In with Google API C++ Client before 2019-04-10. It potentially causes an outage of third-party services that were not designed to recover from exceptions. On the client, ID token handling can cause an unhandled exception because of misinterpretation of an integer as a string, resulting in denial-of-service and then other users can no longer login/sign-in to the affected third-party service. Once this third-party service uses Google Sign-In with google-api-cpp-client, a malicious user can trigger this client/auth/oauth2_authorization.cc vulnerability by requesting the client to receive the ID token from a Google authentication server.

Risk And Classification

Problem Types: CWE-754

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Google Api C Client All All All All
Application Google Api C Client All All All All
Application Google Api C Client All All All All

References

ReferenceSourceLinkTags
Fixed 'exp' handling in ID token by sungjungk · Pull Request #58 · google/google-api-cpp-client · GitHub MISC github.com Issue Tracking, Patch, Third Party Advisory
Error on 'exp' type handling in ID Token · Issue #57 · google/google-api-cpp-client · GitHub MISC github.com Exploit, Issue Tracking, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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