// For flags

CVE-2020-17444

 

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

An issue was discovered in picoTCP 1.7.0. The routine for processing the next header field (and deducing whether the IPv6 extension headers are valid) doesn't check whether the header extension length field would overflow. Therefore, if it wraps around to zero, iterating through the extension headers will not increment the current data pointer. This leads to an infinite loop and Denial-of-Service in pico_ipv6_check_headers_sequence() in pico_ipv6.c.

Se detectó un problema en picoTCP versión 1.7.0. La rutina para procesar el siguiente campo de encabezado (y deducir si los encabezados de extensión de IPv6 son válidos) no comprueba si el campo de longitud de extensión de encabezado se desbordaría. Por lo tanto, si vuelve a cero, la iteración por medio de los encabezados de extensión no incrementará el puntero de datos actual. Esto conlleva a un bucle infinito y Denegación de Servicio en la función pico_ipv6_check_headers_sequence() en el archivo pico_ipv6.c

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-08-07 CVE Reserved
  • 2020-12-11 CVE Published
  • 2024-04-30 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-190: Integer Overflow or Wraparound
  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (2)
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Altran
Search vendor "Altran"
Picotcp
Search vendor "Altran" for product "Picotcp"
<= 1.7.0
Search vendor "Altran" for product "Picotcp" and version " <= 1.7.0"
-
Affected