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AUSCERT External Security Bulletin Redistribution
golang-go.crypto security update
1 July 2019
AusCERT Security Bulletin Summary
Operating System: Debian GNU/Linux 8
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
CVE Names: CVE-2019-11840
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running golang-go.crypto check for an updated version of the
software for their operating system.
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Package : golang-go.crypto
Version : 0.0~hg190-1+deb8u1
CVE ID : CVE-2019-11840
A flaw was found in the amd64 implementation of salsa20. 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.
For Debian 8 "Jessie", this problem has been fixed in version
obfs4proxy has been rebuilt as version 0.0.3-2+deb8u1.
We recommend that you upgrade your golang-golang-x-crypto-dev
and obfs4proxy packages, and rebuild any software using
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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