Amazon Linux AMI update for gnutls

1) Cryptographic issues

EUVDB-ID: #VU32712

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-1619

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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

The TLS implementation in GnuTLS before 2.12.23, 3.0.x before 3.0.28, and 3.1.x before 3.1.7 does not properly consider timing side-channel attacks on a noncompliant MAC check operation during the processing of malformed CBC padding, which allows remote attackers to conduct distinguishing attacks and plaintext-recovery attacks via statistical analysis of timing data for crafted packets, a related issue to CVE-2013-0169.

Mitigation

Update the affected packages:

i686:
    gnutls-guile-2.8.5-10.9.amzn1.i686
    gnutls-2.8.5-10.9.amzn1.i686
    gnutls-debuginfo-2.8.5-10.9.amzn1.i686
    gnutls-utils-2.8.5-10.9.amzn1.i686
    gnutls-devel-2.8.5-10.9.amzn1.i686

src:
    gnutls-2.8.5-10.9.amzn1.src

x86_64:
    gnutls-utils-2.8.5-10.9.amzn1.x86_64
    gnutls-2.8.5-10.9.amzn1.x86_64
    gnutls-devel-2.8.5-10.9.amzn1.x86_64
    gnutls-debuginfo-2.8.5-10.9.amzn1.x86_64
    gnutls-guile-2.8.5-10.9.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

https://alas.aws.amazon.com/ALAS-2013-172.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.