CVE-2020-8929

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Summary

CVECVE-2020-8929
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-10-19 13:15:00 UTC
Updated2020-10-29 22:16:00 UTC
DescriptionA mis-handling of invalid unicode characters in the Java implementation of Tink versions prior to 1.5 allows an attacker to change the ID part of a ciphertext, which result in the creation of a second ciphertext that can decrypt to the same plaintext. This can be a problem with encrypting deterministic AEAD with a single key, and rely on a unique ciphertext-per-plaintext.

Risk And Classification

Problem Types: NVD-CWE-Other

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Google Tink All All All All
Application Google Tink All All All All

References

ReferenceSourceLinkTags
Fixing ciphertext malleability issue in Java caused by storing the ci… · google/tink@93d839a · GitHub CONFIRM github.com Patch, Third Party Advisory
Ciphertext Malleability Issue in Tink Java · Advisory · google/tink · GitHub CONFIRM github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Peter Esbensen

Legacy QID Mappings

  • 983214 Java (maven) Security Update for com.google.crypto.tink:tink (GHSA-g5vf-v6wf-7w2r)

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