CVE-2020-13777
CVSS V2 Medium 5.8
CVSS V3 High 7.4
Description
GnuTLS 3.6.x before 3.6.14 uses incorrect cryptography for encrypting a session ticket (a loss of confidentiality in TLS 1.2, and an authentication bypass in TLS 1.3). The earliest affected version is 3.6.4 (2018-09-24) because of an error in a 2018-09-18 commit. Until the first key rotation, the TLS server always uses wrong data in place of an encryption key derived from an application.
Overview
- CVE ID
- CVE-2020-13777
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2020-06-04T07:15:10
- Last Modified Date
- 2023-03-01T16:48:14
Weakness Enumerations
CPE Configuration (Product)
CPE | Vulnerable | Operator | Version Start | Version End |
---|---|---|---|---|
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* | 1 | OR | 3.6.0 | 3.6.14 |
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* | 1 | OR | ||
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 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
Sources
Source Name | Source URL |
---|---|
NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-13777 |
MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13777 |
History
Created | Old Value | New Value | Data Type | Notes |
---|---|---|---|---|
2022-05-10 17:20:02 | Added to TrackCVE | |||
2022-12-04 17:22:06 | 2020-06-04T07:15Z | 2020-06-04T07:15:10 | CVE Published Date | updated |
2022-12-04 17:22:06 | 2020-08-18T15:05:58 | CVE Modified Date | updated | |
2022-12-04 17:22:06 | Modified | Vulnerability Status | updated | |
2022-12-28 16:11:59 | Modified | Undergoing Analysis | Vulnerability Status | updated |
2023-03-01 17:10:43 | 2023-03-01T16:48:14 | CVE Modified Date | updated | |
2023-03-01 17:10:43 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |