FRITZ!Box up to 7.21 Protection Mechanism dns rebinding

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in FRITZ!Box up to 7.21. It has been declared as critical. Affected is an unknown function of the component Protection Mechanism. Executing a manipulation can lead to dns rebinding. The identification of this vulnerability is CVE-2020-26887. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in FRITZ!Box up to 7.21 and classified as critical. This vulnerability affects some unknown processing of the component Protection Mechanism. The manipulation with an unknown input leads to a dns rebinding vulnerability. The CWE definition for the vulnerability is CWE-350. The product performs reverse DNS resolution on an IP address to obtain the hostname and make a security decision, but it does not properly ensure that the IP address is truly associated with the hostname. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 10/23/2020. The advisory is shared for download at packetstormsecurity.com. This vulnerability was named CVE-2020-26887. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1583.002.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept.

Upgrading to version 7.21 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (49293). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Dns rebinding
CWE: CWE-350
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FRITZ!Box 7.21

Timelineinfo

10/08/2020 🔍
10/23/2020 +15 days 🔍
10/23/2020 +0 days 🔍
06/23/2024 +1339 days 🔍

Sourcesinfo

Advisory: 159606
Status: Confirmed

CVE: CVE-2020-26887 (🔍)
GCVE (CVE): GCVE-0-2020-26887
GCVE (VulDB): GCVE-100-163624
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/23/2020 16:22
Updated: 06/23/2024 02:39
Changes: 10/23/2020 16:22 (37), 11/27/2020 01:15 (2), 11/27/2020 01:22 (18), 10/04/2022 04:10 (2), 06/23/2024 02:39 (23)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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