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Vulnerability of Pillow: out-of-bounds memory reading via libImaging/Jpeg2KDecode.c

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via libImaging/Jpeg2KDecode.c of Pillow, in order to trigger a denial of service, or to obtain sensitive information.
Impacted systems: Fedora, Solaris, Ubuntu.
Severity of this alert: 2/4.
Creation date: 06/07/2020.
Références of this alert: bulletinoct2020, CVE-2020-10994, FEDORA-2020-c52106e48a, FEDORA-2020-d0737711b6, USN-4430-1, USN-4430-2, VIGILANCE-VUL-32705.

Description of the vulnerability 

An attacker can force a read at an invalid address via libImaging/Jpeg2KDecode.c of Pillow, in order to trigger a denial of service, or to obtain sensitive information.
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This cybersecurity alert impacts software or systems such as Fedora, Solaris, Ubuntu.

Our Vigil@nce team determined that the severity of this weakness 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 weakness.

Solutions for this threat 

Fedora 31: new python-pillow packages.
New packages are available:
  Fedora 31: python-pillow 6.2.2-3.fc31

Fedora 32: new python-pillow packages.
New packages are available:
  Fedora 32: python-pillow 7.0.0-4.fc32

Oracle Solaris: patch for third party software of October 2020 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

Ubuntu: new python-pil packages.
New packages are available:
  Ubuntu 20.04 LTS: python3-pil 7.0.0-4ubuntu0.1
  Ubuntu 18.04 LTS: python-pil 5.1.0-1ubuntu0.3, python3-pil 5.1.0-1ubuntu0.3
  Ubuntu 16.04 LTS: python-pil 3.1.2-0ubuntu1.4, python3-pil 3.1.2-0ubuntu1.4
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