AVM FRITZ!Box 7390/7490 Signature code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in AVM FRITZ!Box 7390/7490. This affects an unknown part of the component Signature Handler. The manipulation leads to code injection. This vulnerability is referenced as CVE-2014-8872. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in AVM FRITZ!Box 7390/7490 (Router Operating System). This issue affects some unknown processing of the component Signature Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is integrity. The summary by CVE is:

Improper Verification of Cryptographic Signature in AVM FRITZ!Box 6810 LTE after firmware 5.22, FRITZ!Box 6840 LTE after firmware 5.23, and other models with firmware 5.50.

The bug was discovered 03/10/2014. The weakness was published 01/21/2015 as rt-sa-2014-010 as not defined advisory (Website). The advisory is shared at redteam-pentesting.de. The identification of this vulnerability is CVE-2014-8872 since 11/14/2014. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

A public exploit has been developed in Binary Data and been published immediately after the advisory. The exploit is available at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 183 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at X-Force (100391). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

03/10/2014 🔍
03/12/2014 +2 days 🔍
09/09/2014 +181 days 🔍
11/14/2014 +66 days 🔍
01/21/2015 +68 days 🔍
01/21/2015 +0 days 🔍
02/03/2015 +13 days 🔍
08/28/2017 +937 days 🔍
03/08/2022 +1653 days 🔍

Sourcesinfo

Advisory: rt-sa-2014-010
Status: Not defined

CVE: CVE-2014-8872 (🔍)
GCVE (CVE): GCVE-0-2014-8872
GCVE (VulDB): GCVE-100-69005
X-Force: 100391 - AVM FRITZ!Box signature security bypass, Medium Risk

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/03/2015 09:41
Updated: 03/08/2022 09:49
Changes: 02/03/2015 09:41 (50), 07/09/2017 08:16 (17), 03/08/2022 09:49 (13)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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