CVE-2019-11840

 

Published at: - 09-05-2019 06:29

Last modified: - 07-10-2022 04:39

Total changes: - 4

Description

An issue was discovered in supplementary Go cryptography libraries, aka golang-googlecode-go-crypto, before 2019-03-20. A flaw was found in the amd64 implementation of golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa. 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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

 

Verification logic

 

Reference

• https://groups.google.com/forum/#!msg/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
• [debian-lts-announce] 20190630 [SECURITY] [DLA 1840-1] golang-go.crypto security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201007 [SECURITY] [DLA 2402-1] golang-go.crypto security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201109 [SECURITY] [DLA 2442-1] obfs4proxy security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20201118 [SECURITY] [DLA 2454-1] rclone security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20210117 [SECURITY] [DLA 2527-1] snapd security update-Mailing List, Third Party Advisory

 

Keywords

NVD

 

CVE-2019-11840

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures