WPA2 Integrity Group Key KRACK nonce re-use

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in WPA2. It has been rated as critical. This vulnerability affects unknown code of the component Integrity Group Key Handler. The manipulation leads to nonce re-use (KRACK). This vulnerability is documented as CVE-2017-13088. It is possible to launch the attack on the physical device. There is not any exploit available. This vulnerability is considered historic because of its background and reception. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in WPA2 (version unknown). It has been rated as critical. This issue affects an unknown function of the component Integrity Group Key Handler. The manipulation with an unknown input leads to a nonce re-use vulnerability (KRACK). Using CWE to declare the problem leads to CWE-323. Nonces should be used for the present occasion and only once. Impacted is confidentiality, integrity, and availability.

The bug was discovered 10/16/2017. The weakness was released 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.
The identification of this vulnerability is CVE-2017-13088 since 08/22/2017. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. 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 103881 (CentOS 7 : wpa_supplicant (CESA-2017:2907) (KRACK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. 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 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103881) and SecurityFocus (BID 101274†). krackattacks.com is providing further details. Entries connected to this vulnerability are available at VDB-107882, VDB-107883, VDB-107884 and VDB-107885. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

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

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 103881
Nessus Name: CentOS 7 : wpa_supplicant (CESA-2017:2907) (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: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

08/22/2017 🔍
10/16/2017 +55 days 🔍
10/16/2017 +0 days 🔍
10/16/2017 +0 days 🔍
10/16/2017 +0 days 🔍
10/17/2017 +1 days 🔍
10/17/2017 +0 days 🔍
10/18/2017 +1 days 🔍
01/03/2023 +1903 days 🔍

Sourcesinfo

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

CVE: CVE-2017-13088 (🔍)
GCVE (CVE): GCVE-0-2017-13088
GCVE (VulDB): GCVE-100-107891

OVAL: 🔍

CERT: 🔍
SecurityFocus: 101274 - WPA2 Key Reinstallation Multiple Security Weaknesses
SecurityTracker: 1039573

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 10/16/2017 18:10
Updated: 01/03/2023 16:55
Changes: 10/16/2017 18:10 (83), 11/25/2019 15:20 (7), 01/17/2021 08:32 (4), 01/03/2023 16:55 (3)
Complete: 🔍
Cache ID: 216::103

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