Timing Attack Affecting openjdk-jre package, versions [,1.8.0_232) [11.0.0, 11.0.5)
Snyk CVSS
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Test your applications- Snyk ID SNYK-UPSTREAM-OPENJDKJRE-502782
- published 13 Nov 2019
- disclosed 16 Oct 2019
- credit Jan Jancar
Introduced: 16 Oct 2019
CVE-2019-2894 Open this link in a new tabHow to fix?
Upgrade openjdk-jre to version 8.0.232, 11.0.5 or higher.
Overview
openjdk-jre is a free and open-source implementation of the Java Platform, Standard Edition (Java SE).
Affected versions of this package are vulnerable to Timing Attack. Timing attacks are possible in implementations of ECDSA/EdDSA in cryptographic software libraries which allows for practical recovery of the long-term private key. This is possible in implementations which leak the bit-length of the scalar during scalar multiplication on an elliptic curve. This leakage might seem minuscule as the bit-length presents a very small amount of information present in the scalar. However, in the case of ECDSA/EdDSA signature generation, the leaked bit-length of the random nonce is enough for full recovery of the private key used after observing a few hundreds to a few thousands of signatures on known messages, due to the application of lattice techniques.