CVE-2021-3716
CVSS V2 Low 3.5
CVSS V3 Low 3.1
Description
A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.
Overview
- CVE ID
- CVE-2021-3716
- Assigner
- secalert@redhat.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-03-02T23:15:09
- Last Modified Date
- 2022-03-09T19:34:59
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:* | 1 | OR | 1.11.8 | 1.24.6 |
| cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:* | 1 | OR | 1.25.1 | 1.26.5 |
| cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:* | 1 | OR | 1.27.1 | 1.27.6 |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* | 1 | OR | ||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:S/C:N/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- SINGLE
- Confidentiality Impact
- NONE
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 3.5
- Severity
- LOW
- Exploitability Score
- 6.8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- NONE
- Availability Impact
- LOW
- Base Score
- 3.1
- Base Severity
- LOW
- Exploitability Score
- 1.6
- Impact Score
- 1.4
References
| Reference URL | Reference Tags |
|---|---|
| https://www.openwall.com/lists/oss-security/2021/08/18/2 | Mailing List Third Party Advisory |
| https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd | Patch Third Party Advisory |
| https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8 | Patch Third Party Advisory |
| https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html | Broken Link |
| https://bugzilla.redhat.com/show_bug.cgi?id=1994695 | Issue Tracking Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-3716 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3716 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:46:45 | Added to TrackCVE | |||
| 2022-12-06 11:11:39 | 2022-03-02T23:15Z | 2022-03-02T23:15:09 | CVE Published Date | updated |
| 2022-12-06 11:11:39 | 2022-03-09T19:34:59 | CVE Modified Date | updated | |
| 2022-12-06 11:11:39 | Analyzed | Vulnerability Status | updated |