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Exposure of Sensitive Information to an Unauthorized Actor

CVE-2018-12435

Severity Medium
Score 5.9/10

Summary

Botan 2.5.0 through 2.6.0 allows a memory-cache side-channel attack on ECDSA signatures, aka the Return Of the Hidden Number Problem or ROHNP, related to "dsa/dsa.cpp, ec_group/ec_group.cpp", and "ecdsa/ecdsa.cpp". To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

  • HIGH
  • LOCAL
  • NONE
  • CHANGED
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-200 - Information Exposure

An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.

Advisory Timeline

  • Published