CVE-2020-8618 - Reachable Assertion

Severity

49%

Complexity

12%

Confidentiality

60%

An attacker who is permitted to send zone data to a server via zone transfer can exploit this to intentionally trigger the assertion failure with a specially constructed zone, denying service to clients.

CVSS 3.1 Base Score 4.9. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).

CVSS 2.0 Base Score 4. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:N/A:P).

Demo Examples

Reachable Assertion

CWE-617

In the excerpt below, an AssertionError (an unchecked exception) is thrown if the user hasn't entered an email address in an HTML form.


               
assert email != null;

Overview

First reported 4 years ago

2020-06-17 22:15:00

Last updated 4 years ago

2020-10-20 12:15:00

Affected Software

ISC BIND

References

https://kb.isc.org/docs/cve-2020-8618

https://kb.isc.org/docs/cve-2020-8618

Vendor Advisory

https://security.netapp.com/advisory/ntap-20200625-0003/

USN-4399-1

openSUSE-SU-2020:1699

openSUSE-SU-2020:1701

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