CVE-2020-7461

Freebsd vulnerability

CVSS

7.3

EPSS

4.1%

EPSS pct

90th

Exploited

No known

In FreeBSD 12.1-STABLE before r365010, 11.4-STABLE before r365011, 12.1-RELEASE before p9, 11.4-RELEASE before p3, and 11.3-RELEASE before p13, dhclient(8) fails to handle certain malformed input related to handling of DHCP option 119 resulting a heap overflow. The heap overflow could in principle be exploited to achieve remote code execution. The affected process runs with reduced privileges in a Capsicum sandbox, limiting the immediate impact of an exploit.

Affected vendor

Freebsd

Affected product

Freebsd

CVSS vector

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

Weakness type (CWE)

CWE-787 — Out-of-bounds Write

Published

2021-03-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity, low impact to availability.

Its EPSS score of 4.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2020-7461

Confirm whether Freebsd Freebsd is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-7461.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-7461

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