// For flags

CVE-2020-24340

 

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 and picoTCP-NG through 1.7.0. The code that processes DNS responses in pico_mdns_handle_data_as_answers_generic() in pico_mdns.c does not check whether the number of answers/responses specified in a DNS packet header corresponds to the response data available in the packet, leading to an out-of-bounds read, invalid pointer dereference, and Denial-of-Service.

Se detectó un problema en picoTCP y picoTCP-NG versiones hasta 1.7.0. El código que procesa las respuestas DNS en la función pico_mdns_handle_data_as_answers_generic() en el archivo pico_mdns.c no comprueba si el número de respuestas y respuestas especificadas en un encabezado del paquete DNS corresponde a los datos de respuesta disponibles en el paquete, lo que conlleva a una lectura fuera de límites, una desreferencia del puntero no válido y una denegación de servicio

*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
  • 2020-08-13 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-125: Out-of-bounds Read
CAPEC
References (2)
URL Tag Source
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 Third Party Advisory
https://www.kb.cert.org/vuls/id/815128 Third Party Advisory
URL Date SRC
URL Date SRC
URL Date SRC
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
Altran
Search vendor "Altran"
 Picotcp-ng
Search vendor "Altran" for product "Picotcp-ng"
 <= 1.7.0
Search vendor "Altran" for product "Picotcp-ng" and version " <= 1.7.0"
-
Affected