CVE-2020-25583

high-risk
Published 2021-03-29

In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 when processing a DNSSL option, rtsold(8) decodes domain name labels per an encoding specified in RFC 1035 in which the first octet of each label contains the label's length. rtsold(8) did not validate label lengths correctly and could overflow the destination buffer.

Do I need to act?

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0.48% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Freebsd

References (4)

Vendor Advisory https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.asc
Third Party Advisory https://security.netapp.com/advisory/ntap-20210423-0004/
Vendor Advisory https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.asc
Third Party Advisory https://security.netapp.com/advisory/ntap-20210423-0004/
56
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 22/34 · High