Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title CrackLib: Buffer overflow
Informations
Name GLSA-201612-25 First vendor Publication 2016-12-08
Vendor Gentoo Last vendor Modification 2016-12-08
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:L/AC:L/Au:N/C:C/I:C/A:C)
Cvss Base Score 7.2 Attack Range Local
Cvss Impact Score 10 Attack Complexity Low
Cvss Expoit Score 3.9 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Synopsis

A vulnerability in CrackLib could lead to the execution of arbitrary code.

Background

CrackLib is a library used to enforce strong passwords by comparing user selected passwords to words in chosen word lists.

Description

A stack-based buffer overflow was discovered in the FascistGecosUser function of lib/fascist.c.

Impact

A local attacker could set a specially crafted GECOS field value in
"/etc/passwd"; possibly resulting in the execution of arbitrary code with the privileges of the process, a Denial of Service condition, or the escalation of privileges.

Workaround

There is no known workaround at this time.

Resolution

All CrackLib users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-libs/cracklib-2.9.6-r1"

References

[ 1 ] CVE-2016-6318
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-6318

Availability

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

https://security.gentoo.org/glsa/201612-25

Original Source

Url : http://security.gentoo.org/glsa/glsa-201612-25.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-787 Out-of-bounds Write (CWE/SANS Top 25)

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1
Os 1
Os 1

Nessus® Vulnerability Scanner

Date Description
2018-08-17 Name : The remote PhotonOS host is missing multiple security updates.
File : PhotonOS_PHSA-2017-0013.nasl - Type : ACT_GATHER_INFO
2016-12-12 Name : The remote Fedora host is missing a security update.
File : fedora_2016-b601141219.nasl - Type : ACT_GATHER_INFO
2016-12-12 Name : The remote Fedora host is missing a security update.
File : fedora_2016-bfa785e39e.nasl - Type : ACT_GATHER_INFO
2016-12-08 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201612-25.nasl - Type : ACT_GATHER_INFO
2016-09-06 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2211-1.nasl - Type : ACT_GATHER_INFO
2016-09-02 Name : The remote SUSE host is missing one or more security updates.
File : suse_SU-2016-2107-1.nasl - Type : ACT_GATHER_INFO
2016-09-01 Name : The remote openSUSE host is missing a security update.
File : openSUSE-2016-1041.nasl - Type : ACT_GATHER_INFO
2016-08-22 Name : The remote Debian host is missing a security update.
File : debian_DLA-599.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2016-12-09 13:25:25
  • Multiple Updates
2016-12-08 17:23:31
  • First insertion