Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2017-7522

NULL Pointer Dereference

Published: Jun 27, 2017 | Modified: Jul 07, 2017
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P
RedHat/V2
RedHat/V3
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2017-7522
CWEhttps://cwe.mitre.org/data/definitions/476.html

OpenVPN versions before 2.4.3 and before 2.3.17 are vulnerable to denial-of-service by authenticated remote attacker via sending a certificate with an embedded NULL character.

Weakness

A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

Affected Software

Name Vendor Start Version End Version
Openvpn Openvpn * 2.3.16 (including)
Openvpn Openvpn 2.4.0 (including) 2.4.0 (including)
Openvpn Openvpn 2.4.0-alpha2 (including) 2.4.0-alpha2 (including)
Openvpn Openvpn 2.4.0-beta1 (including) 2.4.0-beta1 (including)
Openvpn Openvpn 2.4.0-beta2 (including) 2.4.0-beta2 (including)
Openvpn Openvpn 2.4.0-rc1 (including) 2.4.0-rc1 (including)
Openvpn Openvpn 2.4.0-rc2 (including) 2.4.0-rc2 (including)
Openvpn Openvpn 2.4.1 (including) 2.4.1 (including)
Openvpn Openvpn 2.4.2 (including) 2.4.2 (including)

Potential Mitigations

References

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