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Vulnerability of Varnish Cache: assertion error via HTTP Proxy Protocol V2

Synthesis of the vulnerability 

An attacker can force an assertion error via HTTP Proxy Protocol V2 of Varnish Cache, in order to trigger a denial of service.
Impacted products: openSUSE Leap, SLES, Varnish.
Severity of this bulletin: 2/4.
Creation date: 04/02/2020.
Références of this threat: CVE-2020-11653, openSUSE-SU-2020:0808-1, openSUSE-SU-2020:0819-1, VIGILANCE-VUL-31509.

Description of the vulnerability 

An attacker can force an assertion error via HTTP Proxy Protocol V2 of Varnish Cache, in order to trigger a denial of service.
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This computer threat announce impacts software or systems such as openSUSE Leap, SLES, Varnish.

Our Vigil@nce team determined that the severity of this computer vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of intranet client.

An attacker with a expert ability can exploit this cybersecurity alert.

Solutions for this threat 

Varnish Cache: versions 6.0.6, 6.2.3 and 6.3.2.
Versions 6.0.6, 6.2.3 and 6.3.2 are fixed:
  https://varnish-cache.org/

openSUSE Leap 15.1: new varnish packages.
New packages are available:
  openSUSE Leap 15.1: varnish 6.2.1-lp151.3.6.1

SUSE LE 15 SP1: new varnish packages.
New packages are available:
  SUSE LE 15 SP1: varnish 6.2.1-bp151.4.6.1
Full bulletin, software filtering, emails, fixes, ... (Request your free trial)

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