// For flags

CVE-2020-10595

 

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 before 4.9 has a buffer overflow that might cause remote code execution in situations involving supplemental prompting by a Kerberos library. It may overflow a buffer provided by the underlying Kerberos library by a single '\0' byte if an attacker responds to a prompt with an answer of a carefully chosen length. The effect may range from heap corruption to stack corruption depending on the structure of the underlying Kerberos library, with unknown effects but possibly including code execution. This code path is not used for normal authentication, but only when the Kerberos library does supplemental prompting, such as with PKINIT or when using the non-standard no_prompt PAM configuration option.

pam-krb5 versiones anteriores a 4.9, presenta un desbordamiento del búfer que puede causar una ejecución de código remota en situaciones que involucran una sugerencia suplementaria para una biblioteca de Kerberos. Esto puede desbordar un búfer proporcionado por la biblioteca Kerberos subyacente por un solo byte "\0" si un atacante responde a un aviso con una respuesta de una longitud cuidadosamente elegida. El efecto puede variar desde una corrupción en la región heap hasta una corrupción en la región stack dependiendo de la estructura de la biblioteca de Kerberos subyacente, con efectos desconocidos pero posiblemente incluyendo una ejecución de código. Esta ruta de código no es usada para una autenticación normal, sino solo cuando la biblioteca de Kerberos realiza una sugerencia suplementaria, tal y como con PKINIT o cuando se utiliza la opción de configuración no_prompt PAM no estándar.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-03-16 CVE Reserved
  • 2020-03-28 CVE Published
  • 2024-03-07 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Pam-krb5 Project
Search vendor "Pam-krb5 Project"
Pam-krb5
Search vendor "Pam-krb5 Project" for product "Pam-krb5"
< 4.9
Search vendor "Pam-krb5 Project" for product "Pam-krb5" and version " < 4.9"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
8.0
Search vendor "Debian" for product "Debian Linux" and version "8.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
10.0
Search vendor "Debian" for product "Debian Linux" and version "10.0"
-
Affected