Vulnerability Details : CVE-2023-27100
Improper restriction of excessive authentication attempts in the SSHGuard component of Netgate pfSense Plus software v22.05.1 and pfSense CE software v2.6.0 allows attackers to bypass brute force protection mechanisms via crafted web requests.
Products affected by CVE-2023-27100
- cpe:2.3:a:pfsense:pfsense:2.6.0:*:*:*:community:*:*:*
- cpe:2.3:a:netgate:pfsense_plus:22.05.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-27100
0.27%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 68 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-27100
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2023-27100
-
The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame, making it more susceptible to brute force attacks.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-27100
-
https://redmine.pfsense.org/issues/13574
Bug #13574: Extra remote address information can confuse ``sshguard`` - pfSense - pfSense bugtrackerIssue Tracking;Patch;Vendor Advisory
-
http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html
pfsenseCE 2.6.0 Protection Bypass ≈ Packet Storm
-
https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.asc
Vendor Advisory
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