VulnerabilityModified
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.
CRITICAL 9.8EPSS 9.84%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.84%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 9.84% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-307
- Affected
- netgate/pfsense plus · pfsense/pfsense
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html
- https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.ascVendor Advisory
- https://redmine.pfsense.org/issues/13574Issue Tracking, Patch, Vendor Advisory
- http://packetstormsecurity.com/files/171791/pfsenseCE-2.6.0-Protection-Bypass.html
- https://docs.netgate.com/downloads/pfSense-SA-23_05.sshguard.ascVendor Advisory
- https://redmine.pfsense.org/issues/13574Issue Tracking, Patch, Vendor Advisory
- https://packetstorm.news/files/id/171791
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.