CVE-2018-12435

NONE EPSS 39.0%
Published Jun 15, 20188y ago · Modified Jun 17, 20262w ago
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Published Jun 15, 2018 8y ago
Last Modified Jun 17, 2026 2w ago

Description

Botan 2.5.0 through 2.6.0 before 2.7.0 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.

Threat Intelligence

EPSS Exploit Probability
39.0% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure

Affected Products 1

VendorProductVersionRange
botan_projectbotan*≥2.5.0  –  ≤2.7.0

References 3

  • botan.randombit.net https://botan.randombit.net/security.html
    Third Party Advisory
  • github.com https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3
    PatchThird Party Advisory
  • nccgroup.trust https://www.nccgroup.trust/us/our-research/technical-advisory-return-of-the-hidden-number-problem/
    ExploitThird Party Advisory

Remediation

  • github.com https://github.com/randombit/botan/commit/48fc8df51d99f9d8ba251219367b3d629cc848e3
    PatchThird Party Advisory