F5 BIG-IP up to 11.1.0 sshd credentials management

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in F5 BIG-IP up to 11.1.0. Affected by this issue is some unknown functionality of the component sshd. Executing a manipulation can lead to credentials management. This vulnerability is tracked as CVE-2012-1493. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in F5 BIG-IP up to 11.1.0 (Firewall Software) and classified as critical. This vulnerability affects an unknown part of the component sshd. The manipulation with an unknown input leads to a credentials management vulnerability. The CWE definition for the vulnerability is CWE-255. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

F5 BIG-IP appliances 9.x before 9.4.8-HF5, 10.x before 10.2.4, 11.0.x before 11.0.0-HF2, and 11.1.x before 11.1.0-HF3, and Enterprise Manager before 2.1.0-HF2, 2.2.x before 2.2.0-HF1, and 2.3.x before 2.3.0-HF3, use a single SSH private key across different customers installations and do not properly restrict access to this key, which makes it easier for remote attackers to perform SSH logins via the PubkeyAuthentication option.

The bug was discovered 02/16/2012. The weakness was disclosed 06/06/2012 by Florent Daigniere with Matta Consulting as SOL13600 as confirmed knowledge base article (Website). The advisory is shared for download at support.f5.com. This vulnerability was named CVE-2012-1493 since 03/01/2012. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is necessary for exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1552.

A public exploit has been developed by Dave Kennedy (ReL1K) in Python and been published immediately after the advisory. It is possible to download the exploit at trustmatta.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 97 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 73920 (SSH Static Key Accepted), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gain a shell remotely. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120271 (F5 Big-IP Remote SSH Vulnerability (SOL13600)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability. Users who cannot upgrade to a non-vulnerable version are advised to reconfigure SSH access on their systems.

The vulnerability is also documented in the databases at Exploit-DB (19064), Tenable (73920), SecurityFocus (BID 53897†), OSVDB (82780†) and Secunia (SA49396†). The entry VDB-5511 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.6
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Credentials management
CWE: CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: Dave Kennedy (ReL1K)
Programming Language: 🔍
Download: 🔍

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EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 73920
Nessus Name: SSH Static Key Accepted
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103494
OpenVAS Name: F5 BIG-IP remote root authentication bypass Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/ssh_bigip
Saint Name: F5 BIG-IP SSH private key

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: f5_bigip_known_privkey.rb
MetaSploit Name: F5 BIG-IP SSH Private Key Exposure
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

02/16/2012 🔍
02/22/2012 +6 days 🔍
02/24/2012 +2 days 🔍
03/01/2012 +6 days 🔍
05/23/2012 +83 days 🔍
06/06/2012 +14 days 🔍
06/06/2012 +0 days 🔍
06/08/2012 +2 days 🔍
06/08/2012 +0 days 🔍
06/08/2012 +0 days 🔍
06/10/2012 +2 days 🔍
06/11/2012 +1 days 🔍
06/13/2012 +2 days 🔍
07/09/2012 +26 days 🔍
05/08/2014 +668 days 🔍
01/02/2025 +3892 days 🔍

Sourcesinfo

Vendor: f5.com

Advisory: SOL13600
Researcher: Florent Daigniere
Organization: Matta Consulting
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-1493 (🔍)
GCVE (CVE): GCVE-0-2012-1493
GCVE (VulDB): GCVE-100-5512
SecurityFocus: 53897 - F5 Multiple Products SSH Configuration Remote Unauthorized Access Vulnerability
Secunia: 49396 - F5 Products SSH Configuration Private Key Disclosure, Highly Critical
OSVDB: 82780
Vulnerability Center: 35288 - F5 Big-IP Multiple Products and Enterprise Manager Allow Remote Privileged Access via SSH, High

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

Entryinfo

Created: 06/13/2012 11:07
Updated: 01/02/2025 16:09
Changes: 06/13/2012 11:07 (93), 04/13/2017 17:10 (13), 03/25/2021 11:07 (3), 06/20/2024 01:08 (15), 01/02/2025 16:09 (2)
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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