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CVE-2020-17444

Published: Dec 11, 2020Updated: Nov 21, 2024 Sources: CVE List NVD csafCWE-20
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.8%
Top 15.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

An issue was discovered in picoTCP 1.7.0. The routine for processing the next header field (and deducing whether the IPv6 extension headers are valid) doesn't check whether the header extension length field would overflow. Therefore, if it wraps around to zero, iterating through the extension headers will not increment the current data pointer. This leads to an infinite loop and Denial-of-Service in pico_ipv6_check_headers_sequence() in pico_ipv6.c.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI: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:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20CWE-190CWE-835

Affected Products

picotcpaltran
Library
OSS Libraries / generic-library
n/an/a
altranoss-projectOSS Librariesaka altran

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
us-cert.cisa.gov
https://www.kb.cert.org/vuls/id/815128
kb.cert.org
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2020/icsa-20-343-01.json
raw.githubusercontent.com
and 47 more references View all →

Timeline

Published
Dec 11, 2020
Last Updated
Nov 21, 2024

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