variot - var-202006-0088

VAR-202006-0088

Vulnerability from variot - Updated: 2023-12-18 13:37

An infinite loop was discovered in the CoAP library in Arm Mbed OS 5.15.3. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse_multiple_options() parses CoAP options in a while loop. This loop's exit condition is computed using the previously allocated heap memory required for storing the result of parsing multiple options. If the input heap memory calculation results in zero bytes, the loop exit condition is never met and the loop is not terminated. As a result, the packet parsing function never exits, leading to resource consumption. ARM Mbed OS is a set of open source embedded operating system dedicated to the Internet of Things of the British ARM company. CoAP library is one of the Constrained Application Protocol (CoAP) libraries. Attackers can use this vulnerability to create an infinite loop

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CVE-2020-12885 (GCVE-0-2020-12885)

Vulnerability from cvelistv5 – Published: 2020-06-18 18:24 – Updated: 2024-08-04 12:11

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://github.com/ARMmbed/mbed-os/issues/12929	x_refsource_MISC
	https://github.com/ARMmbed/mbed-coap/pull/116	x_refsource_CONFIRM

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          "value": "An infinite loop was discovered in the CoAP library in Arm Mbed OS 5.15.3. The CoAP parser is responsible for parsing received CoAP packets. The function sn_coap_parser_options_parse_multiple_options() parses CoAP options in a while loop. This loop\u0027s exit condition is computed using the previously allocated heap memory required for storing the result of parsing multiple options. If the input heap memory calculation results in zero bytes, the loop exit condition is never met and the loop is not terminated. As a result, the packet parsing function never exits, leading to resource consumption."
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          "url": "https://github.com/ARMmbed/mbed-coap/pull/116"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

VAR-202006-0088

CVE-2020-12885 (GCVE-0-2020-12885)

Tags

Sightings

Nomenclature