CVE-2021-27854
Juniper bbox IPv6 Denial of Service
Description
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using combinations of VLAN 0 headers, LLC/SNAP headers, and converting frames from Ethernet to Wifi and its reverse.
INFO
Published Date :
Sept. 27, 2022, 7:15 p.m.
Last Modified :
Nov. 21, 2024, 5:58 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
1.4
Exploitability Score :
2.8
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-2021-27854.
| URL | Resource |
|---|---|
| https://blog.champtar.fr/VLAN0_LLC_SNAP/ | |
| https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ | Vendor Advisory |
| https://kb.cert.org/vuls/id/855201 | |
| https://standards.ieee.org/ieee/802.1Q/10323/ | Vendor Advisory |
| https://standards.ieee.org/ieee/802.2/1048/ | Vendor Advisory |
| https://blog.champtar.fr/VLAN0_LLC_SNAP/ | |
| https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ | Vendor Advisory |
| https://kb.cert.org/vuls/id/855201 | |
| https://standards.ieee.org/ieee/802.1Q/10323/ | Vendor Advisory |
| https://standards.ieee.org/ieee/802.2/1048/ | Vendor 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-2021-27854 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27854 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 af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://blog.champtar.fr/VLAN0_LLC_SNAP/ Added Reference https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ Added Reference https://kb.cert.org/vuls/id/855201 Added Reference https://standards.ieee.org/ieee/802.1Q/10323/ Added Reference https://standards.ieee.org/ieee/802.2/1048/ -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 12, 2022
Action Type Old Value New Value Added Reference https://kb.cert.org/vuls/id/855201 [No Types Assigned] Added Reference https://blog.champtar.fr/VLAN0_LLC_SNAP/ [No Types Assigned] -
Initial Analysis by [email protected]
Oct. 04, 2022
Action Type Old Value New Value Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N Changed Reference Type https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ No Types Assigned https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/ Vendor Advisory Changed Reference Type https://standards.ieee.org/ieee/802.1Q/10323/ No Types Assigned https://standards.ieee.org/ieee/802.1Q/10323/ Vendor Advisory Changed Reference Type https://standards.ieee.org/ieee/802.2/1048/ No Types Assigned https://standards.ieee.org/ieee/802.2/1048/ Vendor Advisory Added CWE NIST CWE-290 Added CPE Configuration OR *cpe:2.3:a:ieee:ieee_802.2:*:*:*:*:*:*:*:* versions up to (including) 802.2h-1997 Added CPE Configuration OR *cpe:2.3:a:ietf:p802.1q:*:*:*:*:*:*:*:* versions up to (including) d1.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27854 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-2021-27854
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
0.41841
percentile