Amazon Linux AMI update for gnupg2

1) Input validation error

EUVDB-ID: #VU32509

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-4617

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The do_uncompress function in g10/compress.c in GnuPG 1.x before 1.4.17 and 2.x before 2.0.24 allows context-dependent attackers to cause a denial of service (infinite loop) via malformed compressed packets, as demonstrated by an a3 01 5b ff byte sequence.

Mitigation

Update the affected packages:

i686:
    gnupg2-2.0.24-1.25.amzn1.i686
    gnupg2-debuginfo-2.0.24-1.25.amzn1.i686
    gnupg2-smime-2.0.24-1.25.amzn1.i686

src:
    gnupg2-2.0.24-1.25.amzn1.src

x86_64:
    gnupg2-smime-2.0.24-1.25.amzn1.x86_64
    gnupg2-debuginfo-2.0.24-1.25.amzn1.x86_64
    gnupg2-2.0.24-1.25.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-2014-379.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.