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Vulnerability of Brotli: buffer overflow via One Shot Decompression Request

Synthesis of the vulnerability 

An attacker can trigger a buffer overflow via One Shot Decompression Request of Brotli, in order to trigger a denial of service, and possibly to run code.
Vulnerable products: Debian, openSUSE Leap, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 30/09/2020.
Références of this bulletin: CVE-2020-8927, DLA-2476-1, DSA-4801-1, openSUSE-SU-2020:1578-1, USN-4568-1, VIGILANCE-VUL-33450.

Description of the vulnerability 

An attacker can trigger a buffer overflow via One Shot Decompression Request of Brotli, in order to trigger a denial of service, and possibly to run code.
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This threat announce impacts software or systems such as Debian, openSUSE Leap, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity alert is medium.

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

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

Solutions for this threat 

Debian 10: new brotli packages.
New packages are available:
  Debian 10: brotli 1.0.7-2+deb10u1

Debian 9: new brotli packages.
New packages are available:
  Debian 9: brotli 0.5.2+dfsg-2+deb9u1

openSUSE Leap 15.2: new brotli packages.
New packages are available:
  openSUSE Leap 15.2: brotli 1.0.9-lp152.2.3.1

Ubuntu: new brotli packages.
New packages are available:
  Ubuntu 20.04 LTS: brotli 1.0.7-6ubuntu0.1
  Ubuntu 18.04 LTS: brotli 1.0.3-1ubuntu1.3
  Ubuntu 16.04 LTS: brotli 1.0.3-1ubuntu1~16.04.2
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