Reachable Assertion in ISC kea



Published: 2019-10-16 | Updated: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-6472
CWE-ID CWE-617
Exploitation vector Local network
Public exploit N/A
Vulnerable software
Subscribe 		kea
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Vendor ISC

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Reachable Assertion

EUVDB-ID: #VU33366

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6472

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

A packet containing a malformed DUID can cause the Kea DHCPv6 server process (kea-dhcp6) to exit due to an assertion failure. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.

Mitigation

Install update from vendor's website.

Vulnerable software versions

kea: 1.6.0

External links

http://kb.isc.org/docs/cve-2019-6472


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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