F5 BIG-IP Virtual Server RSA cryptographic issue

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in F5 BIG-IP. The affected element is an unknown function of the component Virtual Server. Such manipulation leads to cryptographic issue (RSA). This vulnerability is documented as CVE-2017-6168. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in F5 BIG-IP (Firewall Software) (version unknown). Affected by this issue is an unknown function of the component Virtual Server. The manipulation with an unknown input leads to a cryptographic issue vulnerability (RSA). Using CWE to declare the problem leads to CWE-310. Impacted is confidentiality, integrity, and availability. CVE summarizes:

On BIG-IP versions 11.6.0-11.6.2 (fixed in 11.6.2 HF1), 12.0.0-12.1.2 HF1 (fixed in 12.1.2 HF2), or 13.0.0-13.0.0 HF2 (fixed in 13.0.0 HF3) a virtual server configured with a Client SSL profile may be vulnerable to an Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) against RSA, which when exploited, may result in plaintext recovery of encrypted messages and/or a Man-in-the-middle (MiTM) attack, despite the attacker not having gained access to the server's private key itself.

The bug was discovered 11/17/2017. The weakness was released 11/17/2017 by Juraj Somorovsky with Tripwire VERT (Website). The advisory is shared for download at support.f5.com. This vulnerability is handled as CVE-2017-6168 since 02/21/2017. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability scanner Nessus provides a plugin with the ID 104687 (F5 Networks BIG-IP : BIG-IP SSL vulnerability (K21905460) (ROBOT)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family F5 Networks Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370661 (F5 BIG-IP OpenSSL Man in the Middle Vulnerability (K21905460) (ROBOT)).

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 (104687) and SecurityFocus (BID 101901†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.6
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.4
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

Name: RSA
Class: Cryptographic issue / RSA
CWE: CWE-310
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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Nessus ID: 104687
Nessus Name: F5 Networks BIG-IP : BIG-IP SSL vulnerability (K21905460) (ROBOT)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

02/21/2017 🔍
11/17/2017 +269 days 🔍
11/17/2017 +0 days 🔍
11/17/2017 +0 days 🔍
11/17/2017 +0 days 🔍
11/17/2017 +0 days 🔍
11/18/2017 +1 days 🔍
11/20/2017 +2 days 🔍
12/25/2024 +2592 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: K21905460
Researcher: Juraj Somorovsky
Organization: Tripwire VERT
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-6168 (🔍)
GCVE (CVE): GCVE-0-2017-6168
GCVE (VulDB): GCVE-100-109676
CERT: 🔍
SecurityFocus: 101901 - Multiple F5 BIG-IP Products CVE-2017-6168 Information Disclosure Vulnerability
SecurityTracker: 1039839

Entryinfo

Created: 11/18/2017 09:02
Updated: 12/25/2024 21:03
Changes: 11/18/2017 09:02 (68), 12/08/2019 15:15 (8), 01/24/2021 12:49 (2), 01/11/2023 07:11 (3), 12/25/2024 21:03 (17)
Complete: 🔍
Cache ID: 216::103

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