Amazon Linux AMI update for bind

1) Input validation error

EUVDB-ID: #VU33932

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-4244

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

ISC BIND 9.x before 9.7.6-P3, 9.8.x before 9.8.3-P3, 9.9.x before 9.9.1-P3, and 9.4-ESV and 9.6-ESV before 9.6-ESV-R7-P3 allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query for a long resource record.

Mitigation

Update the affected packages:

i686:
    bind-9.8.2-0.10.rc1.24.amzn1.i686
    bind-libs-9.8.2-0.10.rc1.24.amzn1.i686
    bind-chroot-9.8.2-0.10.rc1.24.amzn1.i686
    bind-sdb-9.8.2-0.10.rc1.24.amzn1.i686
    bind-utils-9.8.2-0.10.rc1.24.amzn1.i686
    bind-debuginfo-9.8.2-0.10.rc1.24.amzn1.i686
    bind-devel-9.8.2-0.10.rc1.24.amzn1.i686

src:
    bind-9.8.2-0.10.rc1.24.amzn1.src

x86_64:
    bind-utils-9.8.2-0.10.rc1.24.amzn1.x86_64
    bind-devel-9.8.2-0.10.rc1.24.amzn1.x86_64
    bind-chroot-9.8.2-0.10.rc1.24.amzn1.x86_64
    bind-sdb-9.8.2-0.10.rc1.24.amzn1.x86_64
    bind-debuginfo-9.8.2-0.10.rc1.24.amzn1.x86_64
    bind-libs-9.8.2-0.10.rc1.24.amzn1.x86_64
    bind-9.8.2-0.10.rc1.24.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-2012-124.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.