Amazon Linux AMI : glibc (ALAS-2015-513)

medium Nessus Plugin ID 83056
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Synopsis

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

Description

A buffer overflow flaw was found in the way glibc's gethostbyname_r() and other related functions computed the size of a buffer when passed a misaligned buffer as input. An attacker able to make an application call any of these functions with a misaligned buffer could use this flaw to crash the application or, potentially, execute arbitrary code with the permissions of the user running the application.
(CVE-2015-1781)

It was discovered that, under certain circumstances, glibc's getaddrinfo() function would send DNS queries to random file descriptors. An attacker could potentially use this flaw to send DNS queries to unintended recipients, resulting in information disclosure or data loss due to the application encountering corrupted data.
(CVE-2013-7423)

Solution

Run 'yum update glibc' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2015-513.html

Plugin Details

Severity: Medium

ID: 83056

File Name: ala_ALAS-2015-513.nasl

Version: 2.3

Type: local

Agent: unix

Published: 4/27/2015

Updated: 4/18/2018

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

Vulnerability Information

CPE: cpe:2.3:o:amazon:linux:*:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-common:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-debuginfo-common:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-headers:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-static:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:glibc-utils:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:nscd:*:*:*:*:*:*:*

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

Patch Publication Date: 4/22/2015

Reference Information

CVE: CVE-2013-7423, CVE-2015-1781

RHSA: 2015:0863

ALAS: 2015-513