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Key Management Errors Affecting botan package, versions <2.9.0-r0

Severity

 Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.12% (47th percentile)

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  • Snyk ID SNYK-ALPINE317-BOTAN-3139022
  • published 8 Jan 2019
  • disclosed 8 Mar 2019
Report a new vulnerability Found a mistake?

Introduced: 8 Jan 2019

CVE-2018-20187 Open this link in a new tab
CWE-320 Open this link in a new tab

How to fix?

Upgrade Alpine:3.17 botan to version 2.9.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream botan package and not the botan package as distributed by Alpine. See How to fix? for Alpine:3.17 relevant fixed versions and status.

A side-channel issue was discovered in Botan before 2.9.0. An attacker capable of precisely measuring the time taken for ECC key generation may be able to derive information about the high bits of the secret key, as the function to derive the public point from the secret scalar uses an unblinded Montgomery ladder whose loop iteration count depends on the bitlength of the secret. This issue affects only key generation, not ECDSA signatures or ECDH key agreement.