cvelistv5 - cve-2020-14935

cve-2020-14935

Vulnerability from cvelistv5

Published

2020-08-18 16:32

Modified

2024-08-04 13:00

Severity ?

Summary

Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP bulk get request response encoding function. The function parsing the received SNMP request does not verify the input message's requested variables against the capacity of the internal SNMP engine buffer. When a bulk get request response is assembled, a stack buffer dedicated for OIDs (with a limited capacity) is allocated in snmp_engine_get_bulk(). When snmp_engine_get_bulk() is populating the stack buffer, an overflow condition may occur due to lack of input length validation. This makes it possible to overwrite stack regions beyond the allocated buffer, including the return address from the function. As a result, the code execution path may be redirected to an address provided in the SNMP bulk get payload. If the target architecture uses common addressing space for program and data memory, it may also be possible to supply code in the SNMP request payload, and redirect the execution path to the remotely injected code, by modifying the function's return address.

References

▼	URL	Tags
	cve@mitre.org	https://drive.google.com/file/d/1qp3ZXaFRiR_imWg0lUbI7-D-hIT268EB/view?usp=sharing	Third Party Advisory
	cve@mitre.org	https://github.com/contiki-ng/contiki-ng/issues/1353	Exploit, Third Party Advisory

Impacted products

Vendor

Product

Version

▼

n/a

Version: n/a

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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

cve-2020-14935

Vulnerability from cvelistv5

gsd-2020-14935

Vulnerability from gsd

ghsa-cvph-4f6c-4mg7

Vulnerability from github

var-202008-0624

Vulnerability from variot

Tags

Sightings

Nomenclature