CVE-2020-24659CWE-476CWE-787

CVE-2020-24659

High · published September 4, 2020

CVSS v3.1
7.5
EPSS
4%
Percentile
90.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.03830 · 90.0th percentile
Weaknesses
CWE-476 · NULL Pointer Dereference; CWE-787 · Out-of-bounds Write
Published
2020-09-04T19:15Z
Affected products (6)
ProductVersionsFixed in
gnu/gnutls< 3.6.153.6.15
fedoraproject/fedoraall versions—
fedoraproject/fedoraall versions—
opensuse/leapall versions—
opensuse/leapall versions—
canonical/ubuntu_linuxall versions—
References (19)
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html · [email protected]http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html · [email protected]https://gitlab.com/gnutls/gnutls/-/issues/1071 · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ · [email protected]https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ · [email protected]https://security.gentoo.org/glsa/202009-01 · [email protected]https://security.netapp.com/advisory/ntap-20200911-0006/ · [email protected]https://usn.ubuntu.com/4491-1/ · [email protected]https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 · [email protected]http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html · af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html · af854a3a-2127-422b-91ae-364da2661108https://gitlab.com/gnutls/gnutls/-/issues/1071 · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3/ · af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N/ · af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202009-01 · af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200911-0006/ · af854a3a-2127-422b-91ae-364da2661108https://usn.ubuntu.com/4491-1/ · af854a3a-2127-422b-91ae-364da2661108https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 · af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/html/ssa-398330.html · 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
EPSS history
Timeline
  • 04 SEP 14:03Z
    An issue was discovered in GnuTLS before 3.6.15
    cvelistv5