Vulnerability identifier: #VU73227

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11840

CWE-ID: CWE-330

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
crypto
Universal components / Libraries / Libraries used by multiple products

Vendor:

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists in the amd64 implementation of golang.org/x/crypto/salsa20 and golang.org/x/crypto/salsa20/salsa. A remote unauthenticated attacker can trigger the vulnerability and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://groups.google.com/forum/#!msg/golang-announce/tjyNcJxb2vQ/n0NRBziSCAAJ
http://go.googlesource.com/crypto/+/b7391e95e576cacdcdd422573063bc057239113d
http://github.com/golang/go/issues/30965
http://bugzilla.redhat.com/show_bug.cgi?id=1691529
http://lists.debian.org/debian-lts-announce/2019/06/msg00029.html
http://lists.debian.org/debian-lts-announce/2020/10/msg00014.html
http://lists.debian.org/debian-lts-announce/2020/11/msg00016.html
http://lists.debian.org/debian-lts-announce/2020/11/msg00030.html
http://lists.debian.org/debian-lts-announce/2021/01/msg00015.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.