Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title RAR and UnRAR: User-assisted execution of arbitrary code
Informations
Name GLSA-201708-05 First vendor Publication 2017-08-21
Vendor Gentoo Last vendor Modification 2017-08-21
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 10 Attack Range Network
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

An integer overflow in RAR and UnRAR might allow remote attackers to execute arbitrary code.

Background

RAR and UnRAR provide command line interfaces for compressing and decompressing RAR files.

Description

A VMSF_DELTA memory corruption was discovered in which an integer overflow can be caused in DataSize+CurChannel. The result is a negative value of the "DestPos" variable which allows writing out of bounds when setting Mem[DestPos].

Impact

A remote attacker, by enticing a user to open a specially crafted archive, could execute arbitrary code with the privileges of the process.

Workaround

There is no known workaround at this time.

Resolution

All RAR users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot -v ">=app-arch/rar-5.5.0_beta4_p20170628"

All UnRAR users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/unrar-5.5.5"

References

[ 1 ] CVE-2012-6706 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-6706

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/201708-05

Original Source

Url : http://security.gentoo.org/glsa/glsa-201708-05.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-190 Integer Overflow or Wraparound (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 5

Nessus® Vulnerability Scanner

Date Description
2018-04-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201804-16.nasl - Type : ACT_GATHER_INFO
2018-03-27 Name : The remote Amazon Linux AMI host is missing a security update.
File : ala_ALAS-2018-976.nasl - Type : ACT_GATHER_INFO
2018-03-14 Name : The remote Fedora host is missing a security update.
File : fedora_2018-d2b08aa37f.nasl - Type : ACT_GATHER_INFO
2018-03-07 Name : The remote Fedora host is missing a security update.
File : fedora_2018-602b5345fa.nasl - Type : ACT_GATHER_INFO
2017-10-23 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201710-21.nasl - Type : ACT_GATHER_INFO
2017-09-26 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201709-24.nasl - Type : ACT_GATHER_INFO
2017-09-13 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-724.nasl - Type : ACT_GATHER_INFO
2017-08-21 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201708-05.nasl - Type : ACT_GATHER_INFO
2017-08-15 Name : The remote host running McAfee Web Gateway is affected by multiple code execu...
File : mcafee_web_gateway_sb10205.nasl - Type : ACT_GATHER_INFO
2017-07-07 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2017-779.nasl - Type : ACT_GATHER_INFO
2017-07-05 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-1760-1.nasl - Type : ACT_GATHER_INFO
2017-07-05 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-1763-1.nasl - Type : ACT_GATHER_INFO
2017-07-03 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-1745-1.nasl - Type : ACT_GATHER_INFO
2017-06-30 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2017-1716-1.nasl - Type : ACT_GATHER_INFO
2017-06-28 Name : The remote Debian host is missing a security update.
File : debian_DLA-1003.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2017-08-22 13:24:46
  • Multiple Updates
2017-08-21 05:21:06
  • First insertion