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CVE-2019-17211

Published: Nov 5, 2019Updated: Nov 21, 2024 Sources: CVE List NVDCWE-190
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
2.6%
Top 16.8%
CISA KEV
Not in KEV
Exploits
8 Known
Remediation
No Fix Available

Description

An integer overflow was discovered in the CoAP library in Arm Mbed OS 5.14.0. The function sn_coap_builder_calc_needed_packet_data_size_2() is used to calculate the required memory for the CoAP message from the sn_coap_hdr_s data structure. Both returned_byte_count and src_coap_msg_ptr->payload_len are of type uint16_t. When added together, the result returned_byte_count can wrap around the maximum uint16_t value. As a result, insufficient buffer space is allocated for the corresponding CoAP message.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-190

Affected Products

mbedmbed
Library
Security Products / pki-crypto
n/an/a
mbedoss-projectSecurity Productsaka mbedtls

Attack Graph

Products CVE Techniques Tactics

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Exploitability

8 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/ARMmbed/mbed-os/blob/d0686fd30b4d3d02efdc7e4d0fbf0dfe173543b6/features/frameworks/mbed-coap/source/sn_coap_builder.c#L1090
github.com
https://github.com/ARMmbed/mbed-os/blob/d0686fd30b4d3d02efdc7e4d0fbf0dfe173543b6/features/frameworks/mbed-coap/source/sn_coap_builder.c#L355
github.com
https://github.com/ARMmbed/mbed-os/blob/d0686fd30b4d3d02efdc7e4d0fbf0dfe173543b6/features/frameworks/mbed-coap/source/sn_coap_builder.c#L524
github.com
and 5 more references View all →

Timeline

Published
Nov 5, 2019
Last Updated
Nov 21, 2024

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