high8.2
CVE-2020-17437
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Uip Project | Uip | through 1.0 |
| Open-Iscsi Project | Open-Iscsi | through 2.1.7 |
| Siemens | Sentron 3va Com100 Firmware | before 4.4.1 |
| Siemens | Sentron 3va Com800 Firmware | before 4.4.1 |
| Siemens | Sentron 3va Dsp800 Firmware | before 4.0 |
| Siemens | Sentron Pac2200 Clp Firmware | All versions |
| Siemens | Sentron Pac2200 Firmware | before 3.2.2 |
| Siemens | Sentron Pac3200 Firmware | before 2.4.7 |
| Siemens | Sentron Pac3200t Firmware | before 3.2.2 |
| Siemens | Sentron Pac3220 Firmware | before 3.2.0 |
| Siemens | Sentron Pac4200 Firmware | before 2.3.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
- https://www.kb.cert.org/vuls/id/815128
- https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
- https://www.kb.cert.org/vuls/id/815128