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Amazon Linux AMI : pam (ALAS-2014-354)

medium Nessus Plugin ID 78297

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

Multiple directory traversal vulnerabilities in pam_timestamp.c in the pam_timestamp module for Linux-PAM (aka pam) 1.1.8 allow local users to create aribitrary files or possibly bypass authentication via a ..
(dot dot) in the (1) PAM_RUSER value to the get_ruser function or (2) PAM_TTY value to the check_tty funtion, which is used by the format_timestamp_name function.

The pam_userdb module for Pam uses a case-insensitive method to compare hashed passwords, which makes it easier for attackers to guess the password via a brute-force attack.

Solution

Run 'yum update pam' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2014-354.html

Plugin Details

Severity: Medium

ID: 78297

File Name: ala_ALAS-2014-354.nasl

Version: 1.3

Type: local

Agent: unix

Published: 10/12/2014

Updated: 4/18/2018

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Vulnerability Information

CPE: cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:pam-debuginfo, p-cpe:/a:amazon:linux:pam, p-cpe:/a:amazon:linux:pam-devel

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 6/15/2014

Reference Information

CVE: CVE-2013-7041, CVE-2014-2583

ALAS: 2014-354