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Vulnerability of tar: NULL pointer dereference via pax_decode_header

Synthesis of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via pax_decode_header() of tar, in order to trigger a denial of service.
Vulnerable software: openSUSE Leap, Solaris, SUSE Linux Enterprise Desktop, SLES.
Severity of this announce: 2/4.
Creation date: 11/04/2019.
Références of this computer vulnerability: CVE-2019-9923, openSUSE-SU-2019:1237-1, SUSE-SU-2019:0926-1, SUSE-SU-2019:14215-1, SUSE-SU-2020:2806-1, VIGILANCE-VUL-29005.

Description of the vulnerability 

An attacker can force a NULL pointer to be dereferenced via pax_decode_header() of tar, in order to trigger a denial of service.
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This threat note impacts software or systems such as openSUSE Leap, Solaris, SUSE Linux Enterprise Desktop, SLES.

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

Solutions for this threat 

openSUSE Leap: new tar packages.
New packages are available:
  openSUSE Leap 15.0: tar 1.30-lp150.7.1

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

SUSE LE 11: new tar packages.
New packages are available:
  SUSE LE 11 SP3: tar 1.27.1-14.8.1
  SUSE LE 11 SP4: tar 1.27.1-14.8.1

SUSE LE 12 SP5: new tar packages.
New packages are available:
  SUSE LE 12 SP5: tar 1.27.1-15.6.3

SUSE LE 15: new tar packages.
New packages are available:
  SUSE LE 15 RTM: tar 1.30-3.3.2

Wind River Linux: solution (21/05/2019).
The solution is indicated in information sources.
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