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CVE-2020-17437

Published: Dec 11, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-787
NVD MITRE
8.2CVSSHIGH
EPSS Score
2.8%
Top 15.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-787

Affected Products

Suse Linux Enterprise ServerNovell Inc.
On-premOS
Operating Systems / linux-distro
uIPAdam Dunkels
Library
OSS Libraries / generic-library
Contiki OSСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
ОСОН ОСнова ОnyxАО «НППКТ»
On-premOS
Operating Systems / linux-distro
novell inc.commercialUSOperating Systems
adam dunkelsindividual-devOSS Librariesaka uip, lwip, lwip
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
ао «нппкт»commercialRUOperating Systems
and 12 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://www.suse.com/security/cve/CVE-2020-17437/
suse.com
https://nvd.nist.gov/vuln/detail/CVE-2020-17437
nvd.nist.gov
https://поддержка.нппкт.рф/bin/view/ОСнова/Обновления/2.5/
xn--80ahaefyxhn.xn--j1afgaq.xn--p1ai
and 24 more references View all →

Timeline

Published
Dec 11, 2020
Last Updated
Nov 21, 2024

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