CVE-2019-11840

medium

Description

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.

References

https://pkg.go.dev/vuln/GO-2022-0209

https://lists.debian.org/debian-lts-announce/2023/06/msg00017.html

https://lists.debian.org/debian-lts-announce/2021/01/msg00015.html

https://lists.debian.org/debian-lts-announce/2020/11/msg00030.html

https://lists.debian.org/debian-lts-announce/2020/11/msg00016.html

https://lists.debian.org/debian-lts-announce/2020/10/msg00014.html

https://lists.debian.org/debian-lts-announce/2019/06/msg00029.html

https://groups.google.com/forum/#%21msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ

https://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d

https://github.com/golang/go/issues/30965

https://bugzilla.redhat.com/show_bug.cgi?id=1691529

Details

Source: Mitre, NVD

Published: 2019-05-09

Updated: 2024-05-14

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Severity: Medium