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Vulnerability of libarchive: denial of service via RAR5

Synthesis of the vulnerability 

An attacker can trigger a fatal error via RAR5 of libarchive, in order to trigger a denial of service.
Impacted systems: Slackware.
Severity of this alert: 2/4.
Creation date: 13/02/2020.
Références of this alert: SSA:2020-043-01, VIGILANCE-VUL-31595.

Description of the vulnerability 

An attacker can trigger a fatal error via RAR5 of libarchive, in order to trigger a denial of service.
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This computer weakness alert impacts software or systems such as Slackware.

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

Solutions for this threat 

Slackware: new libarchive packages.
New packages are available:
  Slackware 14.1: libarchive 3.4.2-*-1_slack14.1
  Slackware 14.2: libarchive 3.4.2-*-1_slack14.2
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