SB2017092610 - Multiple vulnerabilities in UnRar

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Main Vulnerability Database SB2017092610

SB2017092610 - Multiple vulnerabilities in UnRar

Published: September 26, 2017

Security Bulletin ID SB2017092610
Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Low 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Out-of-bounds read (CVE-ID: CVE-2017-12940)

The vulnerability allows a remote attacker to crash the affected application.

The vulnerability exists due to out-pf-bounds read in libunrar.a in UnRAR before 5.5.7 in the EncodeFileName::Decode call within the Archive::ReadHeader15 function. A remote attacker can create a specially crafted archive and crash the affected application.


2) Out-of-bounds read (CVE-ID: CVE-2017-12941)

The vulnerability allows a remote attacker to crash the affected application.

The vulnerability exists due to out-of-bounds read in libunrar.a in UnRAR before 5.5.7 in the Unpack::Unpack20 function. A remote attacker can create a specially crafted archive and crash the affected application.


3) Buffer overflow (CVE-ID: CVE-2017-12942)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error when processing archives in in the Unpack::LongLZ function in libunrar.a in UnRAR before 5.5.7. A remote unauthenticated attacker can create a specially crafted archive, trick the victim into opening it an execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References