12 January 2023
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.0172 Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Remote Code Execution and Denial of Service Vulnerability 12 January 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Publisher: Cisco Systems Operating System: Cisco Resolution: Patch/Upgrade CVE Names: CVE-2023-20007 Original Bulletin: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rcedos-7HjP74jD Comment: CVSS (Max): 4.7 CVE-2023-20007 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L) CVSS Source: Cisco Systems Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers Remote Code Execution and Denial of Service Vulnerability Priority: Medium Advisory ID: cisco-sa-sb-rv-rcedos-7HjP74jD First Published: 2023 January 11 16:00 GMT Version 1.0: Final Workarounds: No workarounds available Cisco Bug IDs: CSCwc84443 CVE Names: CVE-2023-20007 Summary o A vulnerability in the web-based management interface of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to execute arbitrary code or cause the web-based management process on the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The attacker must have valid administrator credentials. This vulnerability is due to insufficient validation of user-supplied input to the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP input to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the web-based management process to restart, resulting in a DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rcedos-7HjP74jD Affected Products o Vulnerable Products At the time of publication, this vulnerability affected the following Cisco products: RV340 Dual WAN Gigabit VPN Routers RV340W Dual WAN Gigabit Wireless-AC VPN Routers RV345 Dual WAN Gigabit VPN Routers RV345P Dual WAN Gigabit POE VPN Routers For information about which Cisco software releases were vulnerable at the time of publication, see the Fixed Software section of this advisory. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Determine the Device Configuration The web-based management interface of these devices is available through a local LAN connection, which cannot be disabled, or through the WAN connection if the remote management feature is enabled. By default, the remote management feature is disabled on these devices. To determine whether the remote management feature is enabled on a device, open the web-based management interface and choose Basic Settings > Remote Management . If the Enable check box is checked, remote management is enabled on the device. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Cisco has confirmed that this vulnerability does not affect the following Cisco products: RV160 VPN Routers RV160W Wireless-AC VPN Routers RV260 VPN Routers RV260P VPN Routers with PoE RV260W Wireless-AC VPN Routers 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 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 At the time of publication, the release information in the following table was accurate. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. The left column lists Cisco software releases, and the right column indicates whether a release was affected by the vulnerability that is described in this advisory and which release included the fix for this vulnerability. Cisco RV340 and RV345 Series Routers Release First Fixed Release Earlier than 1.0.03.29 1.0.03.29 The Cisco Product Security Incident Response Team (PSIRT) validates only the affected and fixed release information that is documented in this advisory. Exploitation and Public Announcements o The Cisco 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 lawhackzz from MoyunSec TopBreaker Labs 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. Subscribe to Cisco Security Notifications o Subscribe Related to This Advisory o URL o https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sb-rv-rcedos-7HjP74jD Revision History o +----------+---------------------------+----------+--------+--------------+ | Version | Description | Section | Status | Date | +----------+---------------------------+----------+--------+--------------+ | 1.0 | Initial public release. | - | Final | 2023-JAN-11 | +----------+---------------------------+----------+--------+--------------+ Legal Disclaimer o THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products. - --------------------------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 email@example.com 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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: https://auscert.org.au/gpg-key/ iQIVAwUBY7+R2MkNZI30y1K9AQiTZQ/+NBOJUjVpWdUGgRsIfnRLFAWsgJ4k4MwA EWJh0xqOZa89nBMze9jG3snLbtelrFk2iKoazP0PZmqs4IhR1KA+8YAimGhgIvRl fDE7jox7TvqqHoUji823l7VqEc2BiD4wl12m5pr70UX2z/r0dcamaiAJ1zbSv2Tq WVcOhXEhJjPAJbMiXZgYCqfvMHKRGbaxu6gVs/tiRSPldnn4WFaUTH2TAeeQ8q3C Fumu4w48C5z2Zxk809EQQxR5sU/Dl8NFIBikt8+HKYz6MtDk3O9dcHDGdkiKPxKb eIBNioj7Kkd0WvQaSTtXHlGmttbtxhKiRq2CnE1EOWd3BqXfHuC0h12YI6QE8A27 hBTWHopwj63kfg5cgClcSBRg9TkfCUSToRhC+6RvlrpDmA608T3utZ1USsPazQTu AKGMx+GN/fbIFDOz8/Fq3eGUkMTzGuFbB88tByHcks/veo6UkOvSVADyLxqSg9LN mLkWcN7FtJPGXuw9JlNKT9W2UafAYGzCICr5u9R6VEeH4cWsj/nMapupa8yZ9fQU toUiiAsiYqhbB0T+YimeWwtjL6z9d3u5+ioVFYWKDG22HShtm+m7zC1FyXTqhhMK 2Geo8nM0D/Zd5djWeRPQvtm4jciKJR0fGhdYh/RlsTTrFtq3HAcszXsfQChyvXJ1 niofRD5wQfU= =SEXc -----END PGP SIGNATURE-----