WPA2 Fast BSS Transition Request KRACK nonce re-use

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in WPA2 and classified as critical. Affected is an unknown function of the component Fast BSS Transition Request Handler. This manipulation causes nonce re-use (KRACK). This vulnerability is tracked as CVE-2017-13082. It is feasible to perform the attack on the physical device. No exploit exists. Due to its background and reception, this vulnerability has an historic impact. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in WPA2 (the affected version unknown) and classified as critical. Affected by this vulnerability is an unknown part of the component Fast BSS Transition Request Handler. The manipulation with an unknown input leads to a nonce re-use vulnerability (KRACK). The CWE definition for the vulnerability is CWE-323. Nonces should be used for the present occasion and only once. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 10/16/2017. The weakness was disclosed 10/16/2017 by Mathy Vanhoef as confirmed paper (Website). It is possible to read the advisory at papers.mathyvanhoef.com. The vendor was not involved in the public release. The paper contains:

Our research paper behind the attack is titled Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2 and will be presented at the Computer and Communications Security (CCS) conference on Wednesday 1 November 2017.
This vulnerability is known as CVE-2017-13082 since 08/22/2017. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/03/2023). The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK. Due to its background and reception, this vulnerability has a historic impact. The advisory points out:
We discovered serious weaknesses in WPA2, a protocol that secures all modern protected Wi-Fi networks. An attacker within range of a victim can exploit these weaknesses using key reinstallation attacks (KRACKs). Concretely, attackers can use this novel attack technique to read information that was previously assumed to be safely encrypted. This can be abused to steal sensitive information such as credit card numbers, passwords, chat messages, emails, photos, and so on. The attack works against all modern protected Wi-Fi networks. Depending on the network configuration, it is also possible to inject and manipulate data. For example, an attacker might be able to inject ransomware or other malware into websites.

We expect the 0-day to have been worth approximately $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103855 (ArubaOS WPA2 Key Reinstallation Vulnerabilities (KRACK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176179 (Debian Security Update for wpa (DSA 3999-1) (KRACK Attack)). The advisory illustrates:

As a proof-of-concept we executed a key reinstallation attack against an Android smartphone. In this demonstration, the attacker is able to decrypt all data that the victim transmits. For an attacker this is easy to accomplish, because our key reinstallation attack is exceptionally devastating against Linux and Android 6.0 or higher.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103855) and SecurityFocus (BID 101274†). Additional details are provided at krackattacks.com. The entries VDB-107882, VDB-107883, VDB-107884 and VDB-107885 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Name: KRACK
Class: Nonce re-use / KRACK
CWE: CWE-323
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103855
Nessus Name: ArubaOS WPA2 Key Reinstallation Vulnerabilities (KRACK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53378
OpenVAS Name: Debian Security Advisory DSA 3999-1 (wpa - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

08/22/2017 🔍
10/16/2017 +55 days 🔍
10/16/2017 +0 days 🔍
10/16/2017 +0 days 🔍
10/16/2017 +0 days 🔍
10/16/2017 +0 days 🔍
10/16/2017 +0 days 🔍
10/17/2017 +1 days 🔍
01/03/2023 +1904 days 🔍

Sourcesinfo

Advisory: RHSA-2017:2907
Researcher: Mathy Vanhoef
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-13082 (🔍)
GCVE (CVE): GCVE-0-2017-13082
GCVE (VulDB): GCVE-100-107887

OVAL: 🔍

CERT: 🔍
SecurityFocus: 101274 - WPA2 Key Reinstallation Multiple Security Weaknesses
SecurityTracker: 1039570

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/16/2017 18:10
Updated: 01/03/2023 16:25
Changes: 10/16/2017 18:10 (81), 11/25/2019 15:11 (7), 01/17/2021 08:15 (4), 01/03/2023 16:25 (3)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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