CVE-2020-17437: Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 08-08-2022 Published: 11-12-2020

CVE-2020-17437
Vulnerability Scoring

8.2
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: NETWORK
  • Privileges Required: None
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality: Low Impact
  • Integrity:
  • Availability: HIGH IMPACT

CVE-2020-17437 Vulnerability Summary

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.

Access Complexity Graph for CVE-2020-17437

Impact Analysis for CVE-2020-17437

CVE-2020-17437: Detailed Information and External References

EPSS

0.00192

EPSS %

0.57231

References

0.00192

CWE

CWE-787

Vulnerable Configurations

  • cpe:2.3:a:uip_project:uip:0.5:*:*:*:*:*:*:*
    cpe:2.3:a:uip_project:uip:0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:uip_project:uip:0.6:*:*:*:*:*:*:*
    cpe:2.3:a:uip_project:uip:0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:uip_project:uip:0.9:*:*:*:*:*:*:*
    cpe:2.3:a:uip_project:uip:0.9:*:*:*:*:*:*:*
  • cpe:2.3:a:uip_project:uip:1.0:*:*:*:*:*:*:*
    cpe:2.3:a:uip_project:uip:1.0:*:*:*:*:*:*:*
  • cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:*
    cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:*
  • cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.873:*:*:*:*:*:*:*
    cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.873:*:*:*:*:*:*:*
  • cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.874:*:*:*:*:*:*:*
    cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.874:*:*:*:*:*:*:*
  • cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.875:*:*:*:*:*:*:*
    cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.875:*:*:*:*:*:*:*
  • cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.876:*:*:*:*:*:*:*
    cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.876:*:*:*:*:*:*:*
  • cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.877:*:*:*:*:*:*:*
    cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.877:*:*:*:*:*:*:*
  • cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.878:*:*:*:*:*:*:*
    cpe:2.3:a:open-iscsi_project:open-iscsi:2.0.878:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_3va_com100_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_3va_com100_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_3va_com800_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_3va_com800_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_3va_dsp800_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_3va_dsp800_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_3va_dsp800:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_3va_dsp800:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_pac2200_clp_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_pac2200_clp_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_pac2200_clp:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_pac2200_clp:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_pac2200_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_pac2200_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_pac2200:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_pac2200:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_pac3200_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_pac3200_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_pac3200t_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_pac3200t_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_pac3200t:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_pac3200t:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_pac3220_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_pac3220_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_pac3220:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_pac3220:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:sentron_pac4200_firmware:-:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:sentron_pac4200_firmware:-:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:sentron_pac4200:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:sentron_pac4200:-:*:*:*:*:*:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

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