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Vulnerability of cURL: information disclosure via CURLOPT_CONNECT_ONLY

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via CURLOPT_CONNECT_ONLY of cURL, in order to obtain sensitive information.
Impacted systems: cURL, Debian, Fedora, QRadar SIEM, openSUSE Leap, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this alert: 2/4.
Creation date: 19/08/2020.
Références of this alert: 6409294, CVE-2020-8231, DLA-2382-1, DSA-4881-1, FEDORA-2020-126a0dd319, FEDORA-2020-da832cb434, openSUSE-SU-2020:1345-1, openSUSE-SU-2020:1359-1, openSUSE-SU-2020:1494-1, SSA:2020-232-01, SUSE-SU-2020:14481-1, SUSE-SU-2020:2444-1, SUSE-SU-2020:2445-1, SUSE-SU-2020:2446-1, USN-4466-1, USN-4466-2, USN-4665-1, USN-4665-2, VIGILANCE-VUL-33107.

Description of the vulnerability 

An attacker can bypass access restrictions to data via CURLOPT_CONNECT_ONLY of cURL, in order to obtain sensitive information.
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This vulnerability announce impacts software or systems such as cURL, Debian, Fedora, QRadar SIEM, openSUSE Leap, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this cybersecurity threat 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 computer threat bulletin.

Solutions for this threat 

cURL: version 7.72.0.
The version 7.72.0 is fixed:
  https://curl.haxx.se/docs/vuln-7.72.0.html

cURL: patch for CURLOPT_CONNECT_ONLY.
A patch is available:
  https://github.com/curl/curl/commit/3c9e021f86872baae412a427e807fbfa2f3e8

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+deb9u12

Fedora 31: new curl packages.
New packages are available:
  Fedora 31: curl 7.66.0-3.fc31

Fedora 32: new curl packages.
New packages are available:
  Fedora 32: curl 7.69.1-5.fc32

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-lp151.5.15.1

openSUSE Leap 15.2: new curl packages.
New packages are available:
  openSUSE Leap 15.2: curl 7.66.0-lp152.3.9.1

Slackware: new curl packages.
New packages are available:
  Slackware 14.0: curl 7.72.0-*-1_slack14.0
  Slackware 14.1: curl 7.72.0-*-1_slack14.1
  Slackware 14.2: curl 7.72.0-*-1_slack14.2

SUSE LE 11: new curl packages.
New packages are available:
  SUSE LE 11 RTM-SP4: curl 7.37.0-70.52.2

SUSE LE: new curl packages.
New packages are available:
  SUSE LE 12 SP5: curl 7.60.0-11.6.1
  SUSE LE 15 SP1: curl 7.60.0-3.32.1
  SUSE LE 15 SP2: curl 7.66.0-4.6.1

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

Ubuntu: new curl packages (19/08/2020).
New packages are available:
  Ubuntu 20.04 LTS: curl 7.68.0-1ubuntu2.2
  Ubuntu 18.04 LTS: curl 7.58.0-2ubuntu3.10
  Ubuntu 16.04 LTS: curl 7.47.0-1ubuntu2.16
  Ubuntu 14.04 ESM: curl 7.35.0-1ubuntu2.20+esm5
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