CVE-2020-7461

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.

Category

7.3
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 48.53% Top 5%
Vendor Advisory FreeBSD.org
Affected: n/a FreeBSD
Published at:
Updated at:

References

Link Tags
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:26.dhclient.asc vendor advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-288459.pdf third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-7461?
CVE-2020-7461 has been scored as a high severity vulnerability.
How to fix CVE-2020-7461?
To fix CVE-2020-7461, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-7461 being actively exploited in the wild?
It is possible that CVE-2020-7461 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~49% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-7461?
CVE-2020-7461 affects n/a FreeBSD.
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