CVEvulnerability
CVE-2020-11501
7.4 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-04-03
- Last modified
- 2026-10-14
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- CVSS 2.0 ([email protected])
- 5.8 MEDIUM — AV:N/AC:M/Au:N/C:P/I:P/A:N
- Weaknesses
- CWE-330
Description
GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.
Affected configurations
• gnu gnutls (>= 3.6.3 < 3.6.13)
• canonical ubuntu linux 19.10
• debian debian linux 10.0
• opensuse leap 15.1
• fedoraproject fedora 31
• fedoraproject fedora 32
Related
Weakness · CWE (1)
- CWE-330 Use of Insufficiently Random Values weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html Third Party Advisory
- https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2 Patch, Third Party Advisory
- https://gitlab.com/gnutls/gnutls/-/issues/960 Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202004-06 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200416-0002/ Third Party Advisory
- https://usn.ubuntu.com/4322-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4652 Third Party Advisory
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31 Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html Third Party Advisory
- https://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2 Patch, Third Party Advisory
- https://gitlab.com/gnutls/gnutls/-/issues/960 Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202004-06 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20200416-0002/ Third Party Advisory
- https://usn.ubuntu.com/4322-1/ Third Party Advisory
- https://www.debian.org/security/2020/dsa-4652 Third Party Advisory
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31 Vendor Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html cert-portal.siemens.com