Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2020-17437

Disclosure Date: December 11, 2020
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

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.

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CVSS V3 Severity and Metrics
Base Score:
8.2 High
Impact Score:
4.2
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
Low
Integrity (I):
None
Availability (A):
High

General Information

Vendors

  • open-iscsi project,
  • siemens,
  • uip project

Products

  • open-iscsi,
  • sentron 3va com100 firmware,
  • sentron 3va com800 firmware,
  • sentron 3va dsp800 firmware,
  • sentron pac2200 clp firmware -,
  • sentron pac2200 firmware,
  • sentron pac3200 firmware,
  • sentron pac3200t firmware,
  • sentron pac3220 firmware,
  • sentron pac4200 firmware,
  • uip

Additional Info

Technical Analysis