FreeBSD 11.3/11.4/12.1 IPv4 DHCP Client heap-based overflow
| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 6.0 | $0-$5k | 0.00 |
Summary
A vulnerability was found in FreeBSD 11.3/11.4/12.1 and classified as critical. Impacted is an unknown function of the component IPv4 DHCP Client. The manipulation results in heap-based overflow. This vulnerability is identified as CVE-2020-7461. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.
Details
A vulnerability was found in FreeBSD 11.3/11.4/12.1 (Operating System). It has been classified as critical. Affected is an unknown code of the component IPv4 DHCP Client. The manipulation with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability.
The weakness was released 09/02/2020 as FreeBSD-SA-20:26.dhclient as confirmed security advisory (Website). The advisory is shared for download at freebsd.org. This vulnerability is traded as CVE-2020-7461. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available.
Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.
Entries connected to this vulnerability are available at VDB-160835 and VDB-160834. Once again VulDB remains the best source for vulnerability data.
Product
Type
Name
Version
License
Website
- Product: https://www.freebsd.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 6.3VulDB Meta Temp Score: 6.0
VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Heap-based overflowCWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
01/21/2020 🔍09/02/2020 🔍
09/02/2020 🔍
09/08/2020 🔍
11/13/2020 🔍
Sources
Product: freebsd.orgAdvisory: FreeBSD-SA-20:26.dhclient
Status: Confirmed
CVE: CVE-2020-7461 (🔍)
GCVE (CVE): GCVE-0-2020-7461
GCVE (VulDB): GCVE-100-160836
See also: 🔍
Entry
Created: 09/08/2020 18:40Updated: 11/13/2020 13:00
Changes: 09/08/2020 18:40 (40), 09/08/2020 18:45 (2), 11/12/2020 07:47 (1), 11/13/2020 13:00 (2)
Complete: 🔍
Cache ID: 216::103
Once again VulDB remains the best source for vulnerability data.
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