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UbuntuUSN-5474-2

HistoryAug 23, 2022 - 12:00 a.m.

Varnish Cache regression

2022-08-2300:00:00

ubuntu.com

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

8 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

0.003 Low

EPSS

Percentile

65.3%

JSON

Releases

Ubuntu 20.04 LTS

Packages

varnish - state of the art, high-performance web accelerator

Details

USN-5474-1 fixed vulnerabilities in Varnish Cache. Unfortunately the fix for
CVE-2020-11653 was incomplete. This update fixes the problem.

Original advisory details:

It was discovered that Varnish Cache could have an assertion failure when a
TLS termination proxy uses PROXY version 2. A remote attacker could possibly
use this issue to restart the daemon and cause a performance loss.
(CVE-2020-11653)

OSVersionArchitecturePackageVersionFilename
Ubuntu20.04noarchvarnish< 6.2.1-2ubuntu0.2UNKNOWN
Ubuntu20.04noarchlibvarnishapi-dev< 6.2.1-2ubuntu0.2UNKNOWN
Ubuntu20.04noarchlibvarnishapi2< 6.2.1-2ubuntu0.2UNKNOWN
Ubuntu20.04noarchlibvarnishapi2-dbgsym< 6.2.1-2ubuntu0.2UNKNOWN
Ubuntu20.04noarchvarnish-dbgsym< 6.2.1-2ubuntu0.2UNKNOWN
Ubuntu20.04noarchvarnish-doc< 6.2.1-2ubuntu0.2UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Ubuntu	20.04	noarch	varnish	< 6.2.1-2ubuntu0.2	UNKNOWN
Ubuntu	20.04	noarch	libvarnishapi-dev	< 6.2.1-2ubuntu0.2	UNKNOWN
Ubuntu	20.04	noarch	libvarnishapi2	< 6.2.1-2ubuntu0.2	UNKNOWN
Ubuntu	20.04	noarch	libvarnishapi2-dbgsym	< 6.2.1-2ubuntu0.2	UNKNOWN
Ubuntu	20.04	noarch	varnish-dbgsym	< 6.2.1-2ubuntu0.2	UNKNOWN
Ubuntu	20.04	noarch	varnish-doc	< 6.2.1-2ubuntu0.2	UNKNOWN