CVE-2020-11501
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'
02 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'
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.38% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 88.2% of scored records. A rank, not a probability.
- NVD base score
- 7.4 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-10-14.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-04-03 12:42Z6 YR AGO
- Last updated
- 2026-10-14 08:55Z15 DAYS AGO
- Reserved
- 2020-04-03
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.2
- Document digest
- 11dc14218bbc18827df80a308504f2d20259881cb9c1280610cd0d37077bdeac
05 Affected products
06 References
- security.gentoo.orgGLSA-202004-06https://security.gentoo.org/glsa/202004-06
- gitlab.comhttps://gitlab.com/gnutls/gnutls/-/issues/960
- gitlab.comhttps://gitlab.com/gnutls/gnutls/-/commit/5b595e8e52653f6c5726a4cdd8fddeb6e83804d2
- www.gnutls.orghttps://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31
- www.debian.orgDSA-4652https://www.debian.org/security/2020/dsa-4652
- lists.opensuse.orgopenSUSE-SU-2020:0501http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20200416-0002/
- usn.ubuntu.comUSN-4322-1https://usn.ubuntu.com/4322-1/
- lists.fedoraproject.orgFEDORA-2020-f90fb78f70https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/
- lists.fedoraproject.orgFEDORA-2020-d14280a6e8https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
07 Fixed in
Debian 12
- gnutls28 Fixed in 3.6.13-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- gnutls28 Fixed in 3.6.13-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- gnutls28 Fixed in 3.6.13-2
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.