Debian DLA-2527-1 : snapd security update

medium Nessus Plugin ID 145165
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote Debian host is missing a security update.

Description

golang-go.crypto was recently updated with a fix for CVE-2019-11840.
This in turn requires all packages that use the affected code to be recompiled in order to pick up the security fix.

CVE-2019-11840

An issue was discovered in supplementary Go cryptography libraries, aka golang-googlecode-go-crypto. 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.

For Debian 9 stretch, this problem has been fixed in version 2.21-2+deb9u1.

We recommend that you upgrade your snapd packages.

For the detailed security status of snapd please refer to its security tracker page at: https://security-tracker.debian.org/tracker/snapd

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

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

https://packages.debian.org/source/stretch/snapd

https://security-tracker.debian.org/tracker/source-package/snapd

Plugin Details

Severity: Medium

ID: 145165

File Name: debian_DLA-2527.nasl

Version: 1.2

Type: local

Agent: unix

Published: 1/20/2021

Updated: 1/22/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:golang-github-snapcore-snapd-dev, p-cpe:/a:debian:debian_linux:golang-github-ubuntu-core-snappy-dev, p-cpe:/a:debian:debian_linux:snap-confine, p-cpe:/a:debian:debian_linux:snapd, p-cpe:/a:debian:debian_linux:ubuntu-core-launcher, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 1/17/2021

Vulnerability Publication Date: 5/9/2019

Reference Information

CVE: CVE-2019-11840