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Vulnerability of libcurl: Man-in-the-Middle via Inferior OCSP Verification

Synthesis of the vulnerability 

An attacker can act as a Man-in-the-Middle via Inferior OCSP Verification on libcurl, in order to read or write data in the session.
Vulnerable products: cURL, Debian, BIG-IP Hardware, TMOS, Fedora, QRadar SIEM, openSUSE Leap, Puppet, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this weakness: 2/4.
Creation date: 09/12/2020.
Références of this bulletin: 6409294, CVE-2020-8286, DLA-2500-1, DSA-4881-1, FEDORA-2020-7ab62c73bc, FEDORA-2020-ceaf490686, K15402727, openSUSE-SU-2020:2238-1, openSUSE-SU-2020:2249-1, SSA:2020-344-01, SUSE-SU-2020:3733-1, SUSE-SU-2020:3735-1, SUSE-SU-2020:3739-1, USN-4665-1, USN-4665-2, VIGILANCE-VUL-34068.

Description of the vulnerability 

An attacker can act as a Man-in-the-Middle via Inferior OCSP Verification on libcurl, in order to read or write data in the session.
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This cybersecurity note impacts software or systems such as cURL, Debian, BIG-IP Hardware, TMOS, Fedora, QRadar SIEM, openSUSE Leap, Puppet, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

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

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

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

Solutions for this threat 

curl, libcurl: version 7.74.0.
The version 7.74.0 is fixed:
  https://curl.se/

Puppet Platform: version 7.1.0.
The version 7.1.0 is fixed:
  https://puppet.com/docs/puppet/latest/release_notes_puppet.html

Debian 10: new curl packages.
New packages are available:
  Debian 10: curl 7.64.0-4+deb10u2

Debian 9: new curl packages.
New packages are available:
  Debian 9: curl 7.52.1-5+deb9u13

F5 BIG-IP: solution for cURL.
The solution is indicated in information sources.

Fedora 32: new curl packages.
New packages are available:
  Fedora 32: curl 7.69.1-7.fc32

Fedora 33: new curl packages.
New packages are available:
  Fedora 33: curl 7.71.1-8.fc33

IBM QRadar SIEM: fixed versions for IBM Security QRadar Analyst Workflow.
Fixed versions are indicated in information sources.

openSUSE Leap 15.1: new curl packages.
New packages are available:
  openSUSE Leap 15.1: curl 7.60.0-lp151.5.18.1

openSUSE Leap 15.2: new curl packages.
New packages are available:
  openSUSE Leap 15.2: curl 7.66.0-lp152.3.12.1

Slackware: new curl packages.
New packages are available:
  Slackware 14.0: curl 7.74.0-*-1_slack14.0
  Slackware 14.1: curl 7.74.0-*-1_slack14.1
  Slackware 14.2: curl 7.74.0-*-1_slack14.2

SUSE LE 12 SP5: new curl packages.
New packages are available:
  SUSE LE 12 SP5: curl 7.60.0-11.9.1

SUSE LE 15 SP1: new curl packages.
New packages are available:
  SUSE LE 15 SP1: curl 7.60.0-3.35.1

SUSE LE 15 SP2: new curl packages.
New packages are available:
  SUSE LE 15 SP2: curl 7.66.0-4.11.1

Ubuntu: new curl packages (09/12/2020).
New packages are available:
  Ubuntu 20.10: curl 7.68.0-1ubuntu4.2
  Ubuntu 20.04 LTS: curl 7.68.0-1ubuntu2.4
  Ubuntu 18.04 LTS: curl 7.58.0-2ubuntu3.12
  Ubuntu 16.04 LTS: curl 7.47.0-1ubuntu2.18
  Ubuntu 14.04 ESM: curl 7.35.0-1ubuntu2.20+esm6
  Ubuntu 12.04 ESM: curl 7.22.0-3ubuntu4.29
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