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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2681 Cisco Small Business Series Switches Open Redirect Vulnerability 18 July 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco Small Business Series Switches Publisher: Cisco Systems Operating System: Cisco Impact/Access: Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-1943 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190717-sbss-redirect - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco Small Business Series Switches Open Redirect Vulnerability Priority: Medium Advisory ID: cisco-sa-20190717-sbss-redirect First Published: 2019 July 17 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvp23218 CVE-2019-1943 CWE-601 CVSS Score: 4.7 AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X Summary o A vulnerability in the web interface of Cisco Small Business 200, 300, and 500 Series Switches software could allow an unauthenticated, remote attacker to redirect a user to a malicious web page. The vulnerability is due to improper input validation of the parameters of an HTTP request. An attacker could exploit this vulnerability by intercepting a user's HTTP request and modifying it into a request that causes the web interface to redirect the user to a specific malicious URL. This type of vulnerability is known as an open redirect attack and is used in phishing attacks that get users to unknowingly visit malicious sites. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190717-sbss-redirect Affected Products o Vulnerable Products This vulnerability affects Cisco 200 Series Smart Switches, Cisco 300 Series Managed Switches, and Cisco 500 Series Stackable Managed Switches. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page , to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Fixed Releases For information about fixed software releases, see the Details section in the bug ID(s) at the top of this advisory. Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o Cisco would like to thank Ramikan of CT Pentest for reporting this vulnerability. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-20190717-sbss-redirect Revision History o +---------+---------------------------+---------+--------+---------------+ | Version | Description | Section | Status | Date | +---------+---------------------------+---------+--------+---------------+ | 1.0 | Initial public release. | - | Final | 2019-July-17 | +---------+---------------------------+---------+--------+---------------+ - --------------------------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. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBXS/2/2aOgq3Tt24GAQg8/hAA0EKF044+7SEiHhQ9Al4Sll+UJSwloUPq PdipOSM05GyQh6AI9iIvSOA0CbRqyFUmHMekbjgVOs/M0GtdmZlk/SvnKP5+lYZS agDWn4Rwmk5VYaaT4n47cIxiij8qDVphfenhgf9bdTKfdCqecxiCMFa4xzRYMS/I K6L/fcx/M657Utzz7xRRbJNaOTe3zY9yvfTZxNlbrtZWv2CSMfV7Kk57zsB/bAXO ZyepHEyux5QEWLYYOXJhTbgCQPFl/H/aq0rLrGeoYx8cJa+RbVzXNVAb4JzQEayR maeK/irqg7kLiRDRSbxSY+dSNn1/ZOAXv6I525eNP3QY2sUCT9Z10PBqndc8NesV 6jiv4CB0DnAl+hTnjhwvOOJqIfcge6CKc0RwtyfM6TzQJdNRodXYIXfLs60D1Uh8 Qn2yyDKGKU12Yv+sbAMuQK3sP85JrBLQT9HRTQ7S+c98Xm7q+w+TuPpxwvaBbl1h TOCd20cmLT/eGHrvc3X3HkrPHDmxQES4izfCmRHlbBq8l1CiJhvxoSare4YJHYLT rZKvIpFNav8R5UzAnacAqEgo4tm3/KALaOo2h5ngb2wtstmhJJq5LKaQU/DlnoGt m3s6ksSz1S8QyPoXuq/3w9fDK5p5NVUCCL6Kjt4EQJi73RggQzHdUdBjy/sNPdmF yIgizwuKVkk= =0UpJ -----END PGP SIGNATURE-----