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CVE-2020-24659

Good to know:

Date: September 4, 2020

An issue was discovered in GnuTLS before 3.6.15. 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 crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.

Language: C

Severity Score

7.5

Related Resources (17)

Url: https://nvd.nist.gov/vuln/detail/CVE-2020-24659

Url: https://usn.ubuntu.com/4491-1/

Url: https://access.redhat.com/security/cve/CVE-2020-24659

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/

Url: http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html

Url: https://security.netapp.com/advisory/ntap-20200911-0006/

Url: https://security.alpinelinux.org/vuln/CVE-2020-24659

Url: https://gitlab.com/gnutls/gnutls/-/issues/1071

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/

Url: https://security-tracker.debian.org/tracker/CVE-2020-24659

Url: http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2020-24659

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/

Url: https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04

Url: https://security.gentoo.org/glsa/202009-01

Url: https://www.mend.io/vulnerability-database/CVE-2020-24659

Severity Score

7.5

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2020-24659

Good to know:

Date: September 4, 2020

Language: C

Severity Score

Related Resources (17)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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