Executive Summary

Summary
Title bzip2: Denial of Service
Informations
Name GLSA-201708-08 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:M/Au:N/C:N/I:N/A:P)
Cvss Base Score 4.3 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

An use-after-free vulnerability has been found in bzip2 that could allow remote attackers to cause a Denial of Service condition.

Background

bzip2 is a high-quality data compressor used extensively by Gentoo Linux.

Description

A use-after-free flaw was found in bzip2recover, leading to a null pointer dereference, or a write to a closed file descriptor. Please review the CVE identifier referenced below for details.

Impact

A remote attacker could entice a user to process a specially crafted bzip2 archive using bzip2recover, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All bzip2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-arch/bzip2-1.0.6-r8"

References

[ 1 ] CVE-2016-3189 : http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-3189

Availability

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

https://security.gentoo.org/glsa/201708-08

Original Source

Url : http://security.gentoo.org/glsa/glsa-201708-08.xml

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Application 313

Nessus® Vulnerability Scanner

Date Description
2017-08-21 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201708-08.nasl - Type : ACT_GATHER_INFO
2017-01-05 Name : The remote Fedora host is missing a security update.
File : fedora_2016-fd44637912.nasl - Type : ACT_GATHER_INFO
2017-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2016-e7b46c92ae.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