#VU6436 Assertion failure in Red Hat Enterprise Linux for x86_64 - CVE-2017-3139

Vulnerability identifier: #VU6436

Vulnerability 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-2017-3139

CWE-ID: CWE-617

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

Vendor: Red Hat Inc.

Description

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

The vulnerability exists due to input validation error when processing DNSSEC validation within the bind package in Red Hat Enterprise Linux 6. A remote unauthenticated attacker can send a specially crafted DNS response and trigger assertion failure.

Successful exploitation of this vulnerability may allow an attacker to perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for x86_64: 6

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External links
https://access.redhat.com/errata/RHSA-2017:1202

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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.