Use of Insufficiently Random Values Affecting golang-go.crypto package, versions <1:0.0~git20200221.2aa609c-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
3.45% (89th percentile)

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  • Snyk IDSNYK-ECHOLATEST-GOLANGGOCRYPTO-19427192
  • published29 Aug 2026
  • disclosed9 May 2019

Introduced: 9 May 2019

CVE-2019-11840  (opens in a new tab)
CWE-330  (opens in a new tab)

How to fix?

Upgrade Echo:latest golang-go.crypto to version 1:0.0~git20200221.2aa609c-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream golang-go.crypto package and not the golang-go.crypto package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

An issue was discovered in the supplementary Go cryptography library, golang.org/x/crypto, before v0.0.0-20190320223903-b7391e95e576. A flaw was found in the amd64 implementation of the golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa packages. If more than 256 GiB of keystream is generated, or if the counter otherwise grows greater than 32 bits, the amd64 implementation will first generate incorrect output, and then cycle back to previously generated keystream. Repeated keystream bytes can lead to loss of confidentiality in encryption applications, or to predictability in CSPRNG applications.

CVSS Base Scores

version 3.1