Amazon Linux AMI update for glibc

1) Input validation error

EUVDB-ID: #VU41360

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-5119

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Off-by-one error in the __gconv_translit_find function in gconv_trans.c in GNU C Library (aka glibc) allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via vectors related to the CHARSET environment variable and gconv transliteration modules.

Mitigation

Update the affected packages:

i686:
    glibc-devel-2.17-55.85.amzn1.i686
    glibc-2.17-55.85.amzn1.i686
    glibc-utils-2.17-55.85.amzn1.i686
    nscd-2.17-55.85.amzn1.i686
    glibc-headers-2.17-55.85.amzn1.i686
    glibc-debuginfo-common-2.17-55.85.amzn1.i686
    glibc-static-2.17-55.85.amzn1.i686
    glibc-common-2.17-55.85.amzn1.i686
    glibc-debuginfo-2.17-55.85.amzn1.i686

src:
    glibc-2.17-55.85.amzn1.src

x86_64:
    glibc-debuginfo-2.17-55.85.amzn1.x86_64
    glibc-common-2.17-55.85.amzn1.x86_64
    glibc-utils-2.17-55.85.amzn1.x86_64
    glibc-2.17-55.85.amzn1.x86_64
    glibc-static-2.17-55.85.amzn1.x86_64
    glibc-debuginfo-common-2.17-55.85.amzn1.x86_64
    glibc-headers-2.17-55.85.amzn1.x86_64
    nscd-2.17-55.85.amzn1.x86_64
    glibc-devel-2.17-55.85.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

CPE2.3

• cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:

External links

http://alas.aws.amazon.com/ALAS-2014-399.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.