7.5

CVE-2020-24659

Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gnu ≫ Gnutls Version < 3.6.15
Fedoraproject ≫ Fedora Version32
Fedoraproject ≫ Fedora Version33
Opensuse ≫ Leap Version15.1
Opensuse ≫ Leap Version15.2
Canonical ≫ Ubuntu Linux Version20.04 SwEditionlts
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 3.73% 0.884
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html
Third Party Advisory
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html
Third Party Advisory
Mailing List
https://gitlab.com/gnutls/gnutls/-/issues/1071
Third Party Advisory
Exploit
Issue Tracking
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/
https://security.gentoo.org/glsa/202009-01
Third Party Advisory
https://security.netapp.com/advisory/ntap-20200911-0006/
Third Party Advisory
https://usn.ubuntu.com/4491-1/
Third Party Advisory
https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04
Vendor Advisory