8.2
CWE
787
Advisory Published
CVE Published
Updated

CVE-2020-17437

First published: Tue Dec 01 2020(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
ubuntu/open-iscsi<2.1.3-1ubuntu1
2.1.3-1ubuntu1
ubuntu/open-iscsi<2.0.874-7.1ubuntu6.4
2.0.874-7.1ubuntu6.4
ubuntu/open-iscsi<2.1.3-1ubuntu1
2.1.3-1ubuntu1
ubuntu/open-iscsi<2.1.3
2.1.3
ubuntu/open-iscsi<2.0.874-5ubuntu2.11+
2.0.874-5ubuntu2.11+
ubuntu/open-iscsi<2.0.873+
2.0.873+
ubuntu/open-iscsi<2.1.3-1ubuntu1
2.1.3-1ubuntu1
ubuntu/open-iscsi<2.1.3-1ubuntu1
2.1.3-1ubuntu1
ubuntu/open-iscsi<2.1.3-1ubuntu1
2.1.3-1ubuntu1
debian/open-iscsi<=2.0.874-7.1
2.1.3-5
2.1.8-1
2.1.9-3
All of
uIP<=1.0
Contiki OS<=3.0
open-iscsi<=2.1.7
All of
Siemens Sentron 3VA Com100<4.4.1
Siemens Sentron 3VA COM100 Firmware
All of
Siemens Sentron 3VA DSP800<4.4.1
Siemens Sentron 3VA COM800 Firmware
All of
Siemens Sentron 3VA DSP800<4.0
Siemens Sentron 3VA DSP800 Firmware
All of
Siemens Sentron PAC2200 CLP
Siemens Sentron PAC2200 CLP Firmware
All of
Siemens Sentron PAC2200 CLP<3.2.2
Siemens Sentron PAC2200 Firmware
All of
Siemens Sentron PAC3200<2.4.7
Siemens Sentron PAC3200 Firmware
All of
Siemens Sentron PAC3200T Firmware<3.2.2
Siemens Sentron PAC3200T Firmware
All of
Siemens Sentron PAC3220 Firmware<3.2.0
Siemens Sentron PAC3220 Firmware
All of
Siemens Sentron PAC4200<2.3.0
Siemens Sentron PAC4200 Firmware
uIP<=1.0
Contiki OS<=3.0
Siemens Sentron 3VA Com100<4.4.1
Siemens Sentron 3VA COM100 Firmware
Siemens Sentron 3VA DSP800<4.4.1
Siemens Sentron 3VA COM800 Firmware
Siemens Sentron 3VA DSP800<4.0
Siemens Sentron 3VA DSP800 Firmware
Siemens Sentron PAC2200 CLP
Siemens Sentron PAC2200 CLP Firmware
Siemens Sentron PAC2200 CLP<3.2.2
Siemens Sentron PAC2200 Firmware
Siemens Sentron PAC3200<2.4.7
Siemens Sentron PAC3200 Firmware
Siemens Sentron PAC3200T Firmware<3.2.2
Siemens Sentron PAC3200T Firmware
Siemens Sentron PAC3220 Firmware<3.2.0
Siemens Sentron PAC3220 Firmware
Siemens Sentron PAC4200<2.3.0
Siemens Sentron PAC4200 Firmware
Contiki OS
Contiki-NG
uIP
open-iscsi
altran picoTCP-NG
picoTCP
butok FNET
Nut/Net

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2020-17437.

  • What is the severity of CVE-2020-17437?

    The severity of CVE-2020-17437 is high with a severity value of 8.2.

  • Which products are affected by CVE-2020-17437?

    Products such as uIP 1.0 in Contiki 3.0 and other related products are affected by CVE-2020-17437.

  • How can I fix CVE-2020-17437?

    To fix CVE-2020-17437, it is recommended to apply the necessary patches or updates provided by the vendor.

  • Where can I find more information about CVE-2020-17437?

    You can find more information about CVE-2020-17437 on the official websites of US-CERT and Siemens, as well as the KB-CERT advisory.

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