// For flags

CVE-2023-39975

krb5: double-free in KDC TGS processing

Severity Score

8.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.

kdc/do_tgs_req.c en MIT Kerberos 5 (también conocido como krb5) 1.21 antes de 1.21.2 tiene un double free que es accesible si un usuario autenticado puede desencadenar un error de gestión de datos de autorización. Los datos incorrectos se copian de un ticket a otro.

A vulnerability was found in MIT krb5, where an authenticated attacker can cause a KDC to free the same pointer twice if it can induce a failure in authorization data handling.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-08-07 CVE Reserved
  • 2023-08-16 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-08-22 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-415: Double Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mit
Search vendor "Mit"
 Kerberos 5
Search vendor "Mit" for product "Kerberos 5"
 >= 1.21 < 1.21.2
Search vendor "Mit" for product "Kerberos 5" and version " >= 1.21 < 1.21.2"
-
Affected