CVE-2020-24336

critical · 9.8

An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is sane. Therefore, when copying an address of an arbitrary length, a buffer overflow can occur. This bug can be exploited whenever NAT64 is enabled.

9.8

CVSS

59.1%

EPSS (exploit prob.)

99th

EPSS percentile

2020-12-11

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-120

Affected products

Vendor	Product	Affected versions
contiki-ng	contiki-ng	<= 4.5
contiki-os	contiki	<= 3.0

Check a specific version with /api/v1/cve/match.

References

https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
https://www.kb.cert.org/vuls/id/815128
https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01
https://www.kb.cert.org/vuls/id/815128

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2020-24336