Amazon Linux AMI update for glibc

1) Path traversal

EUVDB-ID: #VU41440

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-2014-0475

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

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

Multiple directory traversal vulnerabilities in GNU C Library (aka glibc or libc6) before 2.20 allow context-dependent attackers to bypass ForceCommand restrictions and possibly have other unspecified impact via a .. (dot dot) in a (1) LC_*, (2) LANG, or other locale environment variable.

Mitigation

Update the affected packages:

i686:
    glibc-debuginfo-2.17-55.86.amzn1.i686
    glibc-2.17-55.86.amzn1.i686
    glibc-common-2.17-55.86.amzn1.i686
    glibc-devel-2.17-55.86.amzn1.i686
    glibc-utils-2.17-55.86.amzn1.i686
    glibc-static-2.17-55.86.amzn1.i686
    glibc-debuginfo-common-2.17-55.86.amzn1.i686
    nscd-2.17-55.86.amzn1.i686
    glibc-headers-2.17-55.86.amzn1.i686

src:
    glibc-2.17-55.86.amzn1.src

x86_64:
    glibc-common-2.17-55.86.amzn1.x86_64
    nscd-2.17-55.86.amzn1.x86_64
    glibc-static-2.17-55.86.amzn1.x86_64
    glibc-2.17-55.86.amzn1.x86_64
    glibc-devel-2.17-55.86.amzn1.x86_64
    glibc-debuginfo-2.17-55.86.amzn1.x86_64
    glibc-debuginfo-common-2.17-55.86.amzn1.x86_64
    glibc-utils-2.17-55.86.amzn1.x86_64
    glibc-headers-2.17-55.86.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-2014-400.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.