CVE-2020-11501
CVSS V2 Medium 5.8
CVSS V3 High 7.4
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.
Overview
- CVE ID
- CVE-2020-11501
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-04-03T13:15:13
- Last Modified Date
- 2021-07-21T11:39:23
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* | 1 | OR | 3.6.3 | 3.6.13 |
| cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 5.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.4
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| 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://www.gnutls.org/security-new.html#GNUTLS-SA-2020-03-31 | Vendor Advisory |
| https://www.debian.org/security/2020/dsa-4652 | Third Party Advisory |
| http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00015.html | Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20200416-0002/ | Third Party Advisory |
| https://usn.ubuntu.com/4322-1/ | Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WDYY3R4F5CUTFAMXH2C5NKYFVDEJLTT7/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ILMOWPKMTZAIMK5F32TUMO34XCABUCFJ/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202004-06 | Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-11501 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11501 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:01:24 | Added to TrackCVE | |||
| 2022-12-04 13:54:47 | 2020-04-03T13:15Z | 2020-04-03T13:15:13 | CVE Published Date | updated |
| 2022-12-04 13:54:47 | 2021-07-21T11:39:23 | CVE Modified Date | updated | |
| 2022-12-04 13:54:47 | Analyzed | Vulnerability Status | updated |