CVE-2020-17437
 
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uip_process in uip.c.
Se detectó un problema en uIP versión 1.0, como es usado en Contiki versión 3.0 y otros productos. Cuando el flag Urgent es ajustado en un paquete TCP, y la pila está configurada para ignorar los datos urgentes, la pila intenta usar el valor de los bytes del puntero Urgent para separar los datos Urgent de los datos normales, al calcular el desplazamiento en el que los datos normales deben estar presentes en el búfer global. Sin embargo, no se comprueba la longitud de este desplazamiento; por lo tanto, para valores grandes de bytes de puntero Urgent, el puntero de datos puede apuntar a la memoria que está mucho más allá del búfer de datos en la función uip_process en el archivo uip.c
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-08-07 CVE Reserved
- 2020-12-11 CVE Published
- 2024-08-04 CVE Updated
- 2024-10-15 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-787: Out-of-bounds Write
CAPEC
References (3)
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 |
---|---|---|
https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf | 2022-08-08 |
URL | Date | SRC |
---|
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Uip Project Search vendor "Uip Project" | Uip Search vendor "Uip Project" for product "Uip" | <= 1.0 Search vendor "Uip Project" for product "Uip" and version " <= 1.0" | - |
Affected
| in | Contiki-os Search vendor "Contiki-os" | Contiki Search vendor "Contiki-os" for product "Contiki" | <= 3.0 Search vendor "Contiki-os" for product "Contiki" and version " <= 3.0" | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron 3va Com100 Firmware Search vendor "Siemens" for product "Sentron 3va Com100 Firmware" | < 4.4.1 Search vendor "Siemens" for product "Sentron 3va Com100 Firmware" and version " < 4.4.1" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron 3va Com100 Search vendor "Siemens" for product "Sentron 3va Com100" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron 3va Com800 Firmware Search vendor "Siemens" for product "Sentron 3va Com800 Firmware" | < 4.4.1 Search vendor "Siemens" for product "Sentron 3va Com800 Firmware" and version " < 4.4.1" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron 3va Com800 Search vendor "Siemens" for product "Sentron 3va Com800" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron 3va Dsp800 Firmware Search vendor "Siemens" for product "Sentron 3va Dsp800 Firmware" | < 4.0 Search vendor "Siemens" for product "Sentron 3va Dsp800 Firmware" and version " < 4.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron 3va Dsp800 Search vendor "Siemens" for product "Sentron 3va Dsp800" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron Pac2200 Clp Firmware Search vendor "Siemens" for product "Sentron Pac2200 Clp Firmware" | - | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron Pac2200 Clp Search vendor "Siemens" for product "Sentron Pac2200 Clp" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron Pac2200 Firmware Search vendor "Siemens" for product "Sentron Pac2200 Firmware" | < 3.2.2 Search vendor "Siemens" for product "Sentron Pac2200 Firmware" and version " < 3.2.2" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron Pac2200 Search vendor "Siemens" for product "Sentron Pac2200" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron Pac3200 Firmware Search vendor "Siemens" for product "Sentron Pac3200 Firmware" | < 2.4.7 Search vendor "Siemens" for product "Sentron Pac3200 Firmware" and version " < 2.4.7" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron Pac3200 Search vendor "Siemens" for product "Sentron Pac3200" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron Pac3200t Firmware Search vendor "Siemens" for product "Sentron Pac3200t Firmware" | < 3.2.2 Search vendor "Siemens" for product "Sentron Pac3200t Firmware" and version " < 3.2.2" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron Pac3200t Search vendor "Siemens" for product "Sentron Pac3200t" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron Pac3220 Firmware Search vendor "Siemens" for product "Sentron Pac3220 Firmware" | < 3.2.0 Search vendor "Siemens" for product "Sentron Pac3220 Firmware" and version " < 3.2.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron Pac3220 Search vendor "Siemens" for product "Sentron Pac3220" | - | - |
Safe
|
Siemens Search vendor "Siemens" | Sentron Pac4200 Firmware Search vendor "Siemens" for product "Sentron Pac4200 Firmware" | < 2.3.0 Search vendor "Siemens" for product "Sentron Pac4200 Firmware" and version " < 2.3.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Sentron Pac4200 Search vendor "Siemens" for product "Sentron Pac4200" | - | - |
Safe
|
Open-iscsi Project Search vendor "Open-iscsi Project" | Open-iscsi Search vendor "Open-iscsi Project" for product "Open-iscsi" | <= 2.1.7 Search vendor "Open-iscsi Project" for product "Open-iscsi" and version " <= 2.1.7" | - |
Affected
|