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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2285 sol35520031: BIG-IP virtual server with HTTP Explicit Proxy and/or SOCKS vulnerability CVE-2016-5700 29 September 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: F5 BIG-IP products Publisher: F5 Networks Operating System: Network Appliance Virtualisation Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Modify Arbitrary Files -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2016-5700 Original Bulletin: https://support.f5.com/kb/en-us/solutions/public/k/35/sol35520031.html - --------------------------BEGIN INCLUDED TEXT-------------------- sol35520031: BIG-IP virtual server with HTTP Explicit Proxy and/or SOCKS vulnerability CVE-2016-5700 Security Advisory Original Publication Date: 09/28/2016 Vulnerability Description BIG-IP virtual servers with a configuration using the HTTP Explicit Proxy functionality and/or SOCKS profile are vulnerable to an unauthenticated, remote attack that allows modification of BIG-IP system configuration, extraction of sensitive system files, and/or possible remote command execution on the BIG-IP system. (CVE-2016-5700) F5 Technical Support has no additional information about this issue. Impact When this vulnerability is successfully exploited, a remote attacker may be able to modify the system configuration or extract sensitive system files. CVSS v3.0 metrics for CVE-2016-5700 CVSS V3 score: 9.0 (base) / 7.8 (temporal) CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C Note: Due to details unique to CVE-2016-5700, we have included CVSS v3.0 metrics in this article. We have not included CVSS v3.0 metrics in Security Advisory articles published on AskF5 for other vulnerabilities. Security Issue Status F5 Product Development has assigned IDs 599168 and 598983 (BIG-IP) to this vulnerability. To determine if your release is known to be vulnerable, the components or features that are affected by the vulnerability, and for information about releases or hotfixes that address the vulnerability, refer to the following table: Product Versions known to be vulnerable Versions known to be not vulnerable Severity Vulnerable component or feature BIG-IP LTM 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.2.1 - 11.4.1 10.2.1 - 10.2.4 BIG-IP AAM 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.4.0 - 11.4.1 BIG-IP AFM 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.4.0 - 11.4.1 BIG-IP Analytics None 12.0.0 - 12.1.1 Not vulnerable None 11.4.0 - 11.6.1 11.2.1 BIG-IP APM 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.2.1 - 11.4.1 10.2.1 - 10.2.4 BIG-IP ASM 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.2.1 - 11.4.1 10.2.1 - 10.2.4 BIG-IP DNS None 12.0.0 - 12.1.0 Not vulnerable None BIG-IP Edge Gateway None 11.2.1 Not vulnerable None 10.2.1 - 10.2.4 BIG-IP GTM None 11.4.0 - 11.6.1 Not vulnerable None 11.2.1 10.2.1 - 10.2.4 BIG-IP Link Controller 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.4.0 - 11.4.1 11.2.1 10.2.1 - 10.2.4 BIG-IP PEM 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.5.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 11.5.4 HF2 11.5.1 HF11 11.4.0 - 11.4.1 BIG-IP PSM None 11.4.0 - 11.4.1 Not vulnerable None 10.2.1 - 10.2.4 BIG-IP WebAccelerator None 11.2.1 Not vulnerable None 10.2.1 - 10.2.4 BIG-IP WOM None 11.2.1 Not vulnerable None 10.2.1 - 10.2.4 BIG-IP WebSafe 12.0.0 - 12.1.0 12.1.1 Severe Virtual server with HTTP Explicit Proxy and/or a SOCKS profile enabled 11.6.0 - 11.6.1 12.1.0 HF2 12.0.0 HF4 11.6.1 HF1 11.6.0 HF8 ARX None 6.2.0 - 6.4.0 Not vulnerable None Enterprise Manager None 3.1.1 Not vulnerable None FirePass None 7.0.0 Not vulnerable None BIG-IQ Cloud None 4.0.0 - 4.5.0 Not vulnerable None BIG-IQ Device None 4.2.0 - 4.5.0 Not vulnerable None BIG-IQ Security None 4.0.0 - 4.5.0 Not vulnerable None BIG-IQ ADC None 4.5.0 Not vulnerable None BIG-IQ Centralized Management None 5.0.0 Not vulnerable None 4.6.0 BIG-IQ Cloud and Orchestration None 1.0.0 Not vulnerable None F5 iWorkflow None 2.0.0 Not vulnerable None LineRate None 2.5.0 - 2.6.1 Not vulnerable None Traffix SDC None 5.0.0 Not vulnerable None 4.0.0 - 4.4.0 Vulnerability Recommended Actions If you are running a version listed in the Versions known to be vulnerable column, you can eliminate this vulnerability by upgrading to a version listed in the Versions known to be not vulnerable column. If the table lists only an older version than what you are currently running, or does not list a non-vulnerable version, then no upgrade candidate currently exists. Only virtual servers with configurations using the HTTP Explicit Proxy functionality and/or SOCKS profile are vulnerable. The HTTP Explicit Proxy functionality is enabled when an HTTP profile associated with a virtual server has the Proxy Mode setting configured with the Explicit value. In the following HTTP profile configuration snippet example, an HTTP profile is configured with the Explicit Proxy functionality: ltm profile http /Common/My_HTTP_explicit_profile { app-service none defaults-from /Common/http-explicit explicit-proxy { default-connect-handling allow dns-resolver /Common/My_DNS_resolver } proxy-type explicit } The following profile configuration snippet example shows a typical SOCKS profile: ltm profile socks My_SOCKS_profile { app-service none defaults-from socks dns-resolver My_DNS_resolver } To determine if your BIG-IP system has a virtual server configuration using the HTTP Explicit Proxy functionality and/or SOCKS profile, perform the following procedures: - - Determining the HTTP profiles configured with the Explicit Proxy functionality - - Determining the SOCKS profiles configured on the system - - Determining the virtual servers that are enabled with the HTTP Explicit Proxy functionality and/or SOCKS profile Determining the HTTP profiles configured with the Explicit Proxy functionality Impact of action: Performing the following procedure should not have a negative impact on your system. 1. Log in to the Traffic Management Shell (tmsh) by typing the following command: tmsh 2. List the HTTP profiles that are configured with the Explicit Proxy functionality by typing the following command: list ltm profile http proxy-type | grep -B 1 explicit 3. Note the names of the HTTP profiles. You will use the noted profile names to determine which virtual server is enabled with the HTTP Explicit Proxy functionality in the final procedure. Determining the SOCKS profiles configured on the system Impact of action: Performing the following procedure should not have a negative impact on your system. 1. Log in to the tmsh utility by typing the following command: tmsh 2. List the SOCKS profile configured on your BIG-IP system by typing the following command: list ltm profile socks 3. Note the names of the configured SOCKS profiles. You will use the profile names to determine which virtual server is enabled with the SOCKS profile in the final procedure. Determining the virtual servers that are enabled with the HTTP Explicit Proxy functionality and/or SOCKS profile Impact of action: Performing the following procedure should not have a negative impact on your system. 1. Log in to the tmsh utility by typing the following command: tmsh 2. Using the profile names obtained from the previous procedures, determine the virtual servers that are enabled with the HTTP Explicit Proxy functionality and/or SOCKS profile by using the following command syntax: list ltm virtual all profiles | grep -B 2 <profile name> For example, you would type the following command to determine which virtual server is using the My_HTTP_explicit_profile profile: list ltm virtual all profiles | grep -B 2 My_HTTP_explicit_profile 3. Repeat step 2 for the remaining profile names obtained from previous procedures. Supplemental Information Common Vulnerability Scoring System v3.0: Specification Document Note: This link takes you to a resource outside of AskF5. The third party could remove the document without our knowledge. SOL9970: Subscribing to email notifications regarding F5 products SOL9957: Creating a custom RSS feed to view new and updated documents SOL4602: Overview of the F5 security vulnerability response policy SOL4918: Overview of the F5 critical issue hotfix policy SOL167: Downloading software and firmware from F5 SOL13123: Managing BIG-IP product hotfixes (11.x - 12.x) SOL9502: BIG-IP hotfix matrix - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. 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If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBV+yXLYx+lLeg9Ub1AQjzuw//YYlUZmEknSAyodYJYiQ+r/m46fNfibOb nq7oCyyU0T5Y/FbAjcChykQYSSMC1AfHjg+Y+fg1d1NvR47WCdglH9W0s24Cigkx NvDyntmFRh19U8ZHkAY4nJE6BiEOdgvisB/N27Ggcajkt98IQDDyBs4SGXkc1jkU D0+UXMx2Q5w6LRh6GetjCBkRbIrMLp0GV2uDvO7bIpUKEVB4hDxeGIUSQwprpjvW GXrC+t0eotPONTwzljM3MXbz/QNrdnBZXXEJ3YXF2QSdgIckUjyzPmNYCjIa3xJW pbMG4d5dsJitQ56scDEU/cWTUXdOv3jOTaGyWSl5cWqBLhtzjxGTEALxm0aDH2ZI ohvZa8qJs03P4wgoR1Z1uKlfrSGKBA3udhgqugqc9Sd2xjAPXwHFlS2pTL+vXqi/ ucifudtTJ54jt/UWXL5iCTm5GKTmgR2EAxmBb9A2OCSiZ1zqFpZurcNQH6PGkP8X PFAZqoxNrwP1im+a0CoxsFp62NvcvvqkWAmVJtHvnUfKmG590QRbLSyjJEIIZXn4 3ARLM06GpJDM8+pEh72Jc1MiOQ/RoX+70n2BF7l6DrgCaMaX+qwj0vSmGBedUYST 67cMDpLASicgvubBy/uMuTwlabeY5k1wLjikiwUhVK2doZmqKlzPvj6tX/9GvdS/ iDNPOcMHqCk= =dwm8 -----END PGP SIGNATURE-----