CVE-2020-24659

תיאור (מקור, אנגלית)

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.

מדדים

CVSS 3.1

7.5 (HIGH) מקור הציון: NVD CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — סבירות ניצול

4% (אחוזון 100) נכון ל-14/10/2026

CWE

CWE-476, CWE-787

מוצרים מושפעים

gnu: gnutls; fedoraproject: fedora; opensuse: leap; canonical: ubuntu linux

קישורים

• https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 Vendor Advisory
• https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04 Vendor Advisory
• https://gitlab.com/gnutls/gnutls/-/issues/1071 ExploitIssue TrackingThird Party Advisory
• https://gitlab.com/gnutls/gnutls/-/issues/1071 ExploitIssue TrackingThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html Mailing ListThird Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html Mailing ListThird Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorap‮…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorap‮…
• https://security.gentoo.org/glsa/202009-01 Third Party Advisory
• https://security.netapp.com/advisory/ntap-20200911-0006/ Third Party Advisory