CVE-2020-17437

CVSS V2 Medium 6.4 CVSS V3 High 8.2
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.
Overview
  • CVE ID
  • CVE-2020-17437
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-12-11T23:15:12
  • Last Modified Date
  • 2022-08-08T14:57:57
Weakness Enumerations
CWE URL
CWE-787 http://cwe.mitre.org/data/definitions/787.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:uip_project:uip:*:*:*:*:*:*:*:* 1 OR 1.0
cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:* 0 OR 3.0
AND
cpe:2.3:a:open-iscsi_project:open-iscsi:*:*:*:*:*:*:*:* 1 OR 2.1.7
AND
cpe:2.3:o:siemens:sentron_3va_com100_firmware:*:*:*:*:*:*:*:* 1 OR 4.4.1
cpe:2.3:h:siemens:sentron_3va_com100:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_3va_com800_firmware:*:*:*:*:*:*:*:* 1 OR 4.4.1
cpe:2.3:h:siemens:sentron_3va_com800:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_3va_dsp800_firmware:*:*:*:*:*:*:*:* 1 OR 4.0
cpe:2.3:h:siemens:sentron_3va_dsp800:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_pac2200_clp_firmware:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:sentron_pac2200_clp:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_pac2200_firmware:*:*:*:*:*:*:*:* 1 OR 3.2.2
cpe:2.3:h:siemens:sentron_pac2200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_pac3200_firmware:*:*:*:*:*:*:*:* 1 OR 2.4.7
cpe:2.3:h:siemens:sentron_pac3200:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_pac3200t_firmware:*:*:*:*:*:*:*:* 1 OR 3.2.2
cpe:2.3:h:siemens:sentron_pac3200t:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_pac3220_firmware:*:*:*:*:*:*:*:* 1 OR 3.2.0
cpe:2.3:h:siemens:sentron_pac3220:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:sentron_pac4200_firmware:*:*:*:*:*:*:*:* 1 OR 2.3.0
cpe:2.3:h:siemens:sentron_pac4200:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • HIGH
  • Base Score
  • 8.2
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 4.2
References
Reference URL Reference Tags
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 Third Party Advisory US Government Resource
https://www.kb.cert.org/vuls/id/815128 Third Party Advisory US Government Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-541018.pdf
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2020-17437
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-17437
History
Created Old Value New Value Data Type Notes
2022-05-10 07:20:36 Added to TrackCVE
2022-12-05 18:06:11 2020-12-11T23:15Z 2020-12-11T23:15:12 CVE Published Date updated
2022-12-05 18:06:11 2022-08-08T14:57:57 CVE Modified Date updated
2022-12-05 18:06:11 Analyzed Vulnerability Status updated