CVE-2017-7479 - Reachable Assertion

Severity

40%

Complexity

80%

Confidentiality

48%

OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.

OpenVPN versions before 2.3.15 and before 2.4.2 are vulnerable to reachable assertion when packet-ID counter rolls over resulting into Denial of Service of server by authenticated attacker.

CVSS 3.0 Base Score 6.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/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 7 years ago

2017-05-15 18:29:00

Last updated 5 years ago

2019-10-03 00:03:00

Affected Software

OpenVPN

OpenVPN 2.4.0

2.4.0

OpenVPN 2.4.0 Alpha 2

2.4.0

OpenVPN 2.4.0 Beta 1

2.4.0

OpenVPN 2.4.0 Beta 2

2.4.0

OpenVPN 2.4.0 Release Candidate 1

2.4.0

OpenVPN 2.4.0 Release Candidate 2

2.4.0

OpenVPN 2.4.1

2.4.1

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