Veracode Vulnerability DatabaseVERACODE:26646Denial Of Service (DoS)
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
gnutls is vulnerable to denial of service (DoS). The vulnerability exists as a server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The issue occurs where the gnutls_deinit function is called after detecting a handshake failure.
References
lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html
lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html
gitlab.com/gnutls/gnutls/-/issues/1071
lists.fedoraproject.org/archives/list/[email protected]/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/
lists.fedoraproject.org/archives/list/[email protected]/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/
security.gentoo.org/glsa/202009-01
security.netapp.com/advisory/ntap-20200911-0006/
usn.ubuntu.com/4491-1/
www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P