CVE-2021-32066
CVSS V2 Medium 5.8
CVSS V3 High 7.4
Description
An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. Net::IMAP does not raise an exception when StartTLS fails with an an unknown response, which might allow man-in-the-middle attackers to bypass the TLS protections by leveraging a network position between the client and the registry to block the StartTLS command, aka a "StartTLS stripping attack."
Overview
- CVE ID
- CVE-2021-32066
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-08-01T19:15:07
- Last Modified Date
- 2022-05-10T18:03:01
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* | 1 | OR | 2.6.0 | 2.6.7 |
| cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* | 1 | OR | 2.7.0 | 2.7.3 |
| cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:* | 1 | OR | 3.0.0 | 3.0.1 |
| cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:* | 1 | OR | 9.2.6.1 |
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://github.com/ruby/ruby/commit/a21a3b7d23704a01d34bd79d09dc37897e00922a | Patch Third Party Advisory |
| https://www.ruby-lang.org/en/news/2021/07/07/starttls-stripping-in-net-imap/ | Vendor Advisory |
| https://hackerone.com/reports/1178562 | Exploit Patch Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210902-0004/ | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2021/10/msg00009.html | Third Party Advisory |
| https://www.oracle.com/security-alerts/cpuapr2022.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-32066 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32066 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-20 16:59:12 | Added to TrackCVE | |||
| 2022-12-05 07:06:26 | 2021-08-01T19:15Z | 2021-08-01T19:15:07 | CVE Published Date | updated |
| 2022-12-05 07:06:26 | 2022-05-10T18:03:01 | CVE Modified Date | updated | |
| 2022-12-05 07:06:26 | Analyzed | Vulnerability Status | updated |