CVE-2021-3716
"nbdkit STARTTLS Plaintext State Caching Vulnerability"
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.
INFO
Published Date :
March 2, 2022, 11:15 p.m.
Last Modified :
July 7, 2023, 7:27 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
1.6
Affected Products
The following products are affected by CVE-2021-3716
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-3716.
| URL | Resource |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=1994695 | Issue Tracking Patch 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://www.openwall.com/lists/oss-security/2021/08/18/2 | Mailing List Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-3716 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3716 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Jul. 07, 2023
Action Type Old Value New Value Removed CWE NIST CWE-924 Added CWE NIST NVD-CWE-Other -
Initial Analysis by [email protected]
Mar. 09, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1994695 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1994695 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd No Types Assigned https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd Patch, Third Party Advisory Changed Reference Type https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8 No Types Assigned https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8 Patch, Third Party Advisory Changed Reference Type https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html No Types Assigned https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html Broken Link Changed Reference Type https://www.openwall.com/lists/oss-security/2021/08/18/2 No Types Assigned https://www.openwall.com/lists/oss-security/2021/08/18/2 Mailing List, Third Party Advisory Added CWE NIST CWE-924 Added CPE Configuration OR *cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:* versions from (including) 1.11.8 up to (excluding) 1.24.6 *cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:* versions from (including) 1.25.1 up to (excluding) 1.26.5 *cpe:2.3:a:nbdkit_project:nbdkit:*:*:*:*:*:*:*:* versions from (including) 1.27.1 up to (excluding) 1.27.6 Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3716 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-3716
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.00%
score
0.42058
percentile