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CVE-2020-7461

HIGH
7.3
CVSS Score
Published: March 26, 2021 at 08:55 PM UTC
Updated: June 17, 2026 at 03:24 AM UTC
5 products affected across 2 vendorsFreeBSDSIMATIC RF650M FirmwareSIMATIC RF350M Firmware

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Severity
HIGH7.3
Exploit prediction
EPSS 4%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-288459.pdf
x_refsource_MISCVendor Advisory
Source: [email protected]
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:26.dhclient.asc

CVSS

7.3HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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