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Vulnerability of libexpat: out-of-bounds memory reading via XML_GetCurrentLineNumber

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via XML_GetCurrentLineNumber() of libexpat, in order to trigger a denial of service, or to obtain sensitive information.
Impacted software: iOS by Apple, iPhone, Mac OS X, Debian, Fedora, Rational ClearCase, Firefox, Thunderbird, OpenBSD, openSUSE Leap, Oracle Fusion Middleware, Oracle OIT, Solaris, WebLogic, Python, RHEL, SIMATIC, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this computer vulnerability: 2/4.
Creation date: 09/09/2019.
Références of this announce: 3609135, CERTFR-2019-AVI-535, cpuapr2020, CVE-2019-15903, DLA-1912-1, DLA-1987-1, DLA-1997-1, DSA-4530-1, DSA-4549-1, DSA-4571-1, DSA-4571-2, FEDORA-2019-672ae0f060, FEDORA-2019-6dcf885e38, FEDORA-2019-9505c6b555, FEDORA-2019-9b4ebc2973, HT210785, HT210788, MFSA-2019-33, MFSA-2019-34, MFSA-2019-35, openSUSE-SU-2019:2204-1, openSUSE-SU-2019:2205-1, openSUSE-SU-2019:2420-1, openSUSE-SU-2019:2424-1, openSUSE-SU-2019:2425-1, openSUSE-SU-2019:2447-1, openSUSE-SU-2019:2451-1, openSUSE-SU-2019:2452-1, openSUSE-SU-2019:2459-1, openSUSE-SU-2019:2464-1, openSUSE-SU-2020:0010-1, openSUSE-SU-2020:0086-1, RHSA-2019:3210-01, RHSA-2019:3237-01, RHSA-2019:3756-01, SSA:2019-259-01, SSA:2019-293-01, SSA:2019-295-01, SSB-439005, SUSE-SU-2019:2429-1, SUSE-SU-2019:2440-1, SUSE-SU-2019:2871-1, SUSE-SU-2019:2872-1, SUSE-SU-2019:2912-1, SUSE-SU-2020:0114-1, SUSE-SU-2020:0302-1, USN-4132-1, USN-4132-2, USN-4165-1, USN-4165-2, USN-4202-2, VIGILANCE-VUL-30268.

Description of the vulnerability 

An attacker can force a read at an invalid address via XML_GetCurrentLineNumber() of libexpat, in order to trigger a denial of service, or to obtain sensitive information.
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This cybersecurity weakness impacts software or systems such as iOS by Apple, iPhone, Mac OS X, Debian, Fedora, Rational ClearCase, Firefox, Thunderbird, OpenBSD, openSUSE Leap, Oracle Fusion Middleware, Oracle OIT, Solaris, WebLogic, Python, RHEL, SIMATIC, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this security vulnerability 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 vulnerability bulletin.

Solutions for this threat 

Apple iOS: version 13.3.
The version 13.3 is fixed:
  https://support.apple.com/

Apple macOS: version 10.13.6-2019-007.
The version 10.13.6-2019-007 is fixed:
  https://support.apple.com/

Apple macOS: version 10.14.6-2019-002.
The version 10.14.6-2019-002 is fixed:
  https://support.apple.com/

Apple macOS: version 10.15.2.
The version 10.15.2 is fixed:
  https://support.apple.com/

Debian 10: new firefox-esr packages.
New packages are available:
  Debian 10: firefox-esr 68.2.0esr-1~deb10u1

Debian 8: new firefox-esr packages.
New packages are available:
  Debian 8: firefox-esr 68.2.0esr-1~deb8u1

Debian 8: new thunderbird packages.
New packages are available:
  Debian 8: thunderbird 1:68.2.2-1~deb8u1

Debian 9/10: new thunderbird packages.
New packages are available:
  Debian 9: thunderbird 1:68.2.2-1~deb9u1
  Debian 10: thunderbird 1:68.2.2-1~deb10u1

Debian: new expat packages.
New packages are available:
  Debian 8: expat 2.1.0-6+deb8u6
  Debian 9: expat 2.2.0-2+deb9u3
  Debian 10: expat 2.2.6-2+deb10u1

Fedora: new expat packages.
New packages are available:
  Fedora 29: expat 2.2.8-1.fc29
  Fedora 30: expat 2.2.8-1.fc30

Fedora: new thunderbird packages.
New packages are available:
  Fedora 30: thunderbird 68.2.2-1.fc30
  Fedora 31: thunderbird 68.2.0-1.fc31

Firefox: version 68.2.
The version 68.2 is fixed:
  https://www.mozilla.org/en-US/firefox/

Firefox: version 70.
The version 70 is fixed:
  https://www.mozilla.org/en-US/firefox/

IBM Rational ClearCase: fixed versions for Expat.
Fixed versions are indicated in information sources.

OpenBSD: patch for expat.
A patch is indicated in information sources.

openSUSE Leap 15.1: new python3 packages (22/01/2020).
New packages are available:
  openSUSE Leap 15.1: python3 3.6.10-lp151.6.7.1

openSUSE Leap 15: new chromium packages.
New packages are available:
  openSUSE Leap 15.0: chromium 78.0.3904.70-lp150.248.2
  openSUSE Leap 15.1: chromium 78.0.3904.70-lp151.2.39.1
  SUSE LE 15 RTM: chromium 78.0.3904.70-bp150.240.1
  SUSE LE 15 SP1: chromium 78.0.3904.70-bp151.3.21.1

openSUSE Leap 15: new expat packages.
New packages are available:
  openSUSE Leap 15.0: expat 2.2.5-lp150.2.6.1
  openSUSE Leap 15.1: expat 2.2.5-lp151.3.6.1

openSUSE Leap 15: new MozillaFirefox packages.
New packages are available:
  openSUSE Leap 15.0: MozillaFirefox 68.2.0-lp150.3.71.1
  openSUSE Leap 15.1: MozillaFirefox 68.2.0-lp151.2.18.2

openSUSE Leap 15: new MozillaThunderbird packages.
New packages are available:
  openSUSE Leap 15.0: MozillaThunderbird 68.2.1-lp150.3.54.1
  openSUSE Leap 15.1: MozillaThunderbird 68.2.1-lp151.2.16.1

Oracle Fusion Middleware: CPU of April 2020.
A Critical Patch Update is available:
  https://support.oracle.com/rs?type=doc&id=2633852.1

Oracle Solaris: patch for third party software of October 2019 v2.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

Oracle Solaris: patch for third party software of October 2019 v3.
A patch is available:
  https://support.oracle.com/rs?type=doc&id=1448883.1

Python: version 3.5.8.
The version 3.5.8 is fixed:
  https://www.python.org/downloads/

Python: version 3.6.10.
The version 3.6.10 is fixed:
  https://www.python.org/downloads/

Python: version 3.7.5.
The version 3.7.5 is fixed:
  https://www.python.org/downloads/

RHEL 6.10: new thunderbird packages.
New packages are available:
  RHEL 6: thunderbird 68.2.0-2.el6_10

RHEL 7.7: new thunderbird packages.
New packages are available:
  RHEL 7: thunderbird 68.2.0-1.el7_7

RHEL 8.0: new thunderbird packages.
New packages are available:
  RHEL 8: thunderbird 68.2.0-1.el8_0

SIMATIC S7-1500 CPU 1518: workaround for GNU/Linux Vulnerabilities.
A workaround is indicated in the information source.

Slackware 14: new expat packages.
New packages are available:
  Slackware 14.0: expat 2.2.8-*-1_slack14.0
  Slackware 14.1: expat 2.2.8-*-1_slack14.1
  Slackware 14.2: expat 2.2.8-*-1_slack14.2

Slackware: new mozilla-firefox packages.
New packages are available:
  Slackware 14.2: mozilla-firefox 68.2.0esr-*-1_slack14.2

Slackware: new python packages.
New packages are available:
  Slackware 14.0: python 2.7.17-*-1_slack14.0
  Slackware 14.1: python 2.7.17-*-1_slack14.1
  Slackware 14.2: python 2.7.17-*-1_slack14.2

SUSE LE 12: new chromium packages.
New packages are available:
  SUSE LE 12 RTM-SP5: chromium 78.0.3904.87-10.1

SUSE LE 12: new MozillaFirefox packages (31/10/2019).
New packages are available:
  SUSE LE 12 SP1: MozillaFirefox 68.2.0-109.95.2
  SUSE LE 12 SP2: MozillaFirefox 68.2.0-109.95.2
  SUSE LE 12 SP3: MozillaFirefox 68.2.0-109.95.2
  SUSE LE 12 SP4: MozillaFirefox 68.2.0-109.95.2
  SUSE LE 12 SP5: MozillaFirefox 68.2.0-109.95.2

SUSE LE 12 SP5: new python36 packages.
New packages are available:
  SUSE LE 12 SP5: python36 3.6.10-4.3.5

SUSE LE 15: new MozillaFirefox packages.
New packages are available:
  SUSE LE 15 RTM: MozillaFirefox 68.2.0-3.59.1
  SUSE LE 15 SP1: MozillaFirefox 68.2.0-3.59.1

SUSE LE 15: new MozillaThunderbird packages.
New packages are available:
  SUSE LE 15 RTM: MozillaThunderbird 68.2.1-3.58.1
  SUSE LE 15 SP1: MozillaThunderbird 68.2.1-3.58.1

SUSE LE 15: new python3 packages (16/01/2020).
New packages are available:
  SUSE LE 15 RTM: python3 3.6.10-3.42.2
  SUSE LE 15 SP1: python3 3.6.10-3.42.2

SUSE LE 15 SP1: new chromium packages.
New packages are available:
  SUSE LE 15 SP1: chromium 78.0.3904.70-bp151.3.50.1

SUSE LE: new expat packages.
New packages are available:
  SUSE LE 15 SP1: expat 2.2.5-3.6.1
  SUSE LE 15 RTM: expat 2.2.5-3.6.1
  SUSE LE 12 SP4: expat 2.1.0-21.9.1

Thunderbird: version 68.2.
The version 68.2 is fixed:
  https://www.mozilla.org/

Ubuntu: new firefox packages.
New packages are available:
  Ubuntu 19.10: firefox 70.0.1+build1-0ubuntu0.19.10.1
  Ubuntu 19.04: firefox 70.0.1+build1-0ubuntu0.19.04.1
  Ubuntu 18.04 LTS: firefox 70.0.1+build1-0ubuntu0.18.04.1
  Ubuntu 16.04 LTS: firefox 70.0.1+build1-0ubuntu0.16.04.1

Ubuntu: new libexpat1 packages.
New packages are available:
  Ubuntu 19.04: libexpat1 2.2.6-1ubuntu0.19.5
  Ubuntu 18.04 LTS: libexpat1 2.2.5-3ubuntu0.2
  Ubuntu 16.04 LTS: libexpat1 2.1.0-7ubuntu0.16.04.5
  Ubuntu 14.04 ESM: libexpat1 2.1.0-4ubuntu1.4+esm2
  Ubuntu 12.04 ESM: libexpat1 2.0.1-7.2ubuntu1.7

Ubuntu: new thunderbird packages.
New packages are available:
  Ubuntu 19.10: thunderbird 1:68.2.2+build1-0ubuntu0.19.10.1
  Ubuntu 18.04 LTS: thunderbird 1:68.2.2+build1-0ubuntu0.18.04.1
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