// For flags

CVE-2020-17443

 

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 code for creating an ICMPv6 echo replies doesn't check whether the ICMPv6 echo request packet's size is shorter than 8 bytes. If the size of the incoming ICMPv6 request packet is shorter than this, the operation that calculates the size of the ICMPv6 echo replies has an integer wrap around, leading to memory corruption and, eventually, Denial-of-Service in pico_icmp6_send_echoreply_not_frag in pico_icmp6.c.

Se detectó un problema en picoTCP versión 1.7.0. El código para crear una respuesta de eco ICMPv6 no comprueba si el tamaño del paquete de peticiones eco ICMPv6 es inferior a 8 bytes. Si el tamaño del paquete de petición ICMPv6 entrante es más corto que esto, la operación que calcula el tamaño de las respuestas de eco ICMPv6 presenta un ajuste de enteros, conllevando a una corrupción en la memoria y, finalmente, una Denegación de Servicio en la función pico_icmp6_send_echoreply_not_frag en el archivo pico_icmp6.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
  • 2023-08-27 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-190: Integer Overflow or Wraparound
  • CWE-787: Out-of-bounds Write
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