CVE-2020-7461: Buffer Overflow
First published: Fri Mar 26 2021(Updated: )
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.
Credit: secteam@freebsd.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD FreeBSD | =11.3 | |
| FreeBSD FreeBSD | =11.3-p1 | |
| FreeBSD FreeBSD | =11.3-p10 | |
| FreeBSD FreeBSD | =11.3-p11 | |
| FreeBSD FreeBSD | =11.3-p12 | |
| FreeBSD FreeBSD | =11.3-p2 | |
| FreeBSD FreeBSD | =11.3-p3 | |
| FreeBSD FreeBSD | =11.3-p4 | |
| FreeBSD FreeBSD | =11.3-p5 | |
| FreeBSD FreeBSD | =11.3-p6 | |
| FreeBSD FreeBSD | =11.3-p7 | |
| FreeBSD FreeBSD | =11.3-p8 | |
| FreeBSD FreeBSD | =11.3-p9 | |
| FreeBSD FreeBSD | =11.4 | |
| FreeBSD FreeBSD | =11.4-p1 | |
| FreeBSD FreeBSD | =11.4-p2 | |
| FreeBSD FreeBSD | =12.1 | |
| FreeBSD FreeBSD | =12.1-p1 | |
| FreeBSD FreeBSD | =12.1-p2 | |
| FreeBSD FreeBSD | =12.1-p3 | |
| FreeBSD FreeBSD | =12.1-p4 | |
| FreeBSD FreeBSD | =12.1-p5 | |
| FreeBSD FreeBSD | =12.1-p6 | |
| FreeBSD FreeBSD | =12.1-p7 | |
| FreeBSD FreeBSD | =12.1-p8 | |
| Siemens Simatic Rf350m Firmware | ||
| Siemens SIMATIC RF350M | ||
| Siemens Simatic Rf650m Firmware | ||
| Siemens SIMATIC RF650M |
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Reference Links
Frequently Asked Questions
What is CVE-2020-7461?
CVE-2020-7461 is a vulnerability in FreeBSD that allows for a heap overflow in the dhclient(8) due to handling of DHCP option 119.
What is the severity of CVE-2020-7461?
The severity of CVE-2020-7461 is high with a severity score of 7.3.
Which versions of FreeBSD are affected by CVE-2020-7461?
FreeBSD versions 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 are affected by CVE-2020-7461.
How can I fix CVE-2020-7461 in FreeBSD?
To fix CVE-2020-7461 in FreeBSD, it is recommended to update to FreeBSD 12.1-STABLE r365010 or later, 11.4-STABLE r365011 or later, 12.1-RELEASE p9 or later, 11.4-RELEASE p3 or later, or 11.3-RELEASE p13 or later.
Where can I find more information about CVE-2020-7461?
You can find more information about CVE-2020-7461 in the following references: [1] [2].
- agent/references
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/severity
- agent/author
- agent/weakness
- agent/event
- agent/tags
- agent/description
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/freebsd
- canonical/freebsd freebsd
- version/freebsd freebsd/11.3
- version/freebsd freebsd/11.3-p1
- version/freebsd freebsd/11.3-p10
- version/freebsd freebsd/11.3-p11
- version/freebsd freebsd/11.3-p12
- version/freebsd freebsd/11.3-p2
- version/freebsd freebsd/11.3-p3
- version/freebsd freebsd/11.3-p4
- version/freebsd freebsd/11.3-p5
- version/freebsd freebsd/11.3-p6
- version/freebsd freebsd/11.3-p7
- version/freebsd freebsd/11.3-p8
- version/freebsd freebsd/11.3-p9
- version/freebsd freebsd/11.4
- version/freebsd freebsd/11.4-p1
- version/freebsd freebsd/11.4-p2
- version/freebsd freebsd/12.1
- version/freebsd freebsd/12.1-p1
- version/freebsd freebsd/12.1-p2
- version/freebsd freebsd/12.1-p3
- version/freebsd freebsd/12.1-p4
- version/freebsd freebsd/12.1-p5
- version/freebsd freebsd/12.1-p6
- version/freebsd freebsd/12.1-p7
- version/freebsd freebsd/12.1-p8
- vendor/siemens
- canonical/siemens simatic rf350m firmware
- canonical/siemens simatic rf350m
- canonical/siemens simatic rf650m firmware
- canonical/siemens simatic rf650m