Amazon Linux AMI update for gnutls

1) Buffer overflow

EUVDB-ID: #VU32530

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/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-2014-3466

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

Buffer overflow in the read_server_hello function in lib/gnutls_handshake.c in GnuTLS before 3.1.25, 3.2.x before 3.2.15, and 3.3.x before 3.3.4 allows remote servers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a long session id in a ServerHello message.

Mitigation

Update the affected packages:

i686:
    gnutls-devel-2.8.5-14.13.amzn1.i686
    gnutls-utils-2.8.5-14.13.amzn1.i686
    gnutls-2.8.5-14.13.amzn1.i686
    gnutls-debuginfo-2.8.5-14.13.amzn1.i686
    gnutls-guile-2.8.5-14.13.amzn1.i686

src:
    gnutls-2.8.5-14.13.amzn1.src

x86_64:
    gnutls-guile-2.8.5-14.13.amzn1.x86_64
    gnutls-utils-2.8.5-14.13.amzn1.x86_64
    gnutls-2.8.5-14.13.amzn1.x86_64
    gnutls-debuginfo-2.8.5-14.13.amzn1.x86_64
    gnutls-devel-2.8.5-14.13.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2014-352.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.