CVE-2023-3326
Network authentication attack via pam_krb5
Severity Score
9.8
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a keytab is not provisioned on the system, pam_krb5 has no way to validate the response from the KDC, and essentially trusts the tgt provided over the network as being valid. In a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned, an attacker that is able to control both the password and the KDC responses can return a valid tgt, allowing authentication to occur for any user on the system.
*Credits:
Taylor R Campbell <riastradh@NetBSD.org>
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2023-06-19 CVE Reserved
- 2023-06-22 CVE Published
- 2024-07-24 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-287: Improper Authentication
- CWE-303: Incorrect Implementation of Authentication Algorithm
CAPEC
- CAPEC-114: Authentication Abuse
References (3)
| URL | Tag | Source |
|---|---|---|
| https://security.netapp.com/advisory/ntap-20230714-0005 | Third Party Advisory |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc | 2023-08-01 | |
| https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc | 2023-08-01 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | < 12.4 Search vendor "Freebsd" for product "Freebsd" and version " < 12.4" | - |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | >= 13.0 < 13.1 Search vendor "Freebsd" for product "Freebsd" and version " >= 13.0 < 13.1" | - |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 12.4 Search vendor "Freebsd" for product "Freebsd" and version "12.4" | - |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 12.4 Search vendor "Freebsd" for product "Freebsd" and version "12.4" | p1 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 12.4 Search vendor "Freebsd" for product "Freebsd" and version "12.4" | p2 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 12.4 Search vendor "Freebsd" for product "Freebsd" and version "12.4" | rc2-p1 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 12.4 Search vendor "Freebsd" for product "Freebsd" and version "12.4" | rc2-p2 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | - |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | b1-p1 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | b2-p2 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p1 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p2 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p3 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p4 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p5 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p6 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | p7 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.1 Search vendor "Freebsd" for product "Freebsd" and version "13.1" | rc1-p1 |
Affected
| ||||||
| Freebsd Search vendor "Freebsd" | Freebsd Search vendor "Freebsd" for product "Freebsd" | 13.2 Search vendor "Freebsd" for product "Freebsd" and version "13.2" | - |
Affected
| ||||||