{"id":42160,"date":"2021-08-05T13:28:04","date_gmt":"2021-08-05T13:28:04","guid":{"rendered":"https:\/\/www.threatshub.org\/blog\/got-a-cheap-cisco-router-in-your-home-office-if-its-one-of-these-theres-an-exposed-rce-hole-you-need-to-plug\/"},"modified":"2021-08-05T13:28:04","modified_gmt":"2021-08-05T13:28:04","slug":"got-a-cheap-cisco-router-in-your-home-office-if-its-one-of-these-theres-an-exposed-rce-hole-you-need-to-plug","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/got-a-cheap-cisco-router-in-your-home-office-if-its-one-of-these-theres-an-exposed-rce-hole-you-need-to-plug\/","title":{"rendered":"Got a cheap Cisco router in your home office? If it&#8217;s one of these, there&#8217;s an exposed RCE hole you need to plug"},"content":{"rendered":"<p>Cisco has published patches for critical vulns affecting the web management interface for some of its Small Business Dual WAN Gigabit routers \u2013 including a 9.8-rated nasty.<\/p>\n<p>The two vulnerabilities affect the RV340, RV345, RV340W, and RV345P products, which are aimed at SMEs and home office setups. Attackers abusing them on unpatched devices are able to execute arbitrary code and also force reboots of affected routers, causing a denial-of-service condition.<\/p>\n<p><a target=\"_blank\" href=\"https:\/\/tools.cisco.com\/security\/center\/content\/CiscoSecurityAdvisory\/cisco-sa-rv340-cmdinj-rcedos-pY8J3qfy\" rel=\"noopener\">CVE-2021-1609<\/a>, rated 9.8 on the CVSS v3.1 scale, allows attackers to &#8220;remotely execute arbitrary code&#8221; thanks to improper validation of HTTP requests, according to Cisco&#8217;s advisory.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"condor\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>Similarly, CVE-2021-1610 (advisory also available at the link above) is a command injection vuln allowing attackers to run arbitrary commands as root \u2013 again, because &#8220;HTTP requests are not properly validated.&#8221; This one&#8217;s rated at 7.2 on the CVSS v3.1 scale.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xmd=\",fluid,mpu,leaderboard,\" data-lg=\",fluid,mpu,leaderboard,\" data-xlg=\",fluid,billboard,superleaderboard,mpu,leaderboard,\" data-xxlg=\",fluid,billboard,superleaderboard,brandwidth,brandimpact,leaderboard,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<div class=\"adun_eagle_desktop_story_wrapper\">\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"mid\" data-raptor=\"eagle\" data-xxlg=\",mpu,dmpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<\/p><\/div>\n<p>Admins running one of the above-named routers are advised get to Cisco&#8217;s website, download and install the patches immediately. There are currently no workarounds. Criminal gangs have a nasty habit of <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/04\/06\/sap_patch_attacks\/\" rel=\"noopener\">rapidly trying to identify and exploit newly patched vulns<\/a> so the longer the patching is left, the greater the risk.<\/p>\n<p>Satnam Narang, a staff research engineer at infosec biz Tenable, noted that the affected web management interface is enabled by default (and can&#8217;t be disabled) over LAN connections into the routers.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44YQvvKb45EwIEiVphXXaiXQAAAIc&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>He opined: &#8220;Based on queries via BinaryEdge, we&#8217;ve confirmed there are at least 8,850 remotely accessible devices. While no proof-of-concept exploit for these flaws is presently available, we know historically that attackers favor targeting vulnerabilities in VPN devices like Pulse Secure, Citrix, and Fortinet.&#8221;<\/p>\n<p>If all else fails, disabling web admin interface access from non-LAN connections may reduce the risk but won&#8217;t eliminate it altogether.<\/p>\n<p>The vulns are broadly similar to ones <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/02\/05\/cisco_critical_rv_vpn_router_bugs\/\" rel=\"noopener\">discovered back in February<\/a>, affecting Cisco&#8217;s RV160 line of small biz VPN routers. Small router security <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/05\/06\/which_router_survey\/\" rel=\"noopener\">is an increasing problem<\/a> as inexpensive, old but functional devices come under increased scrutiny. New laws in the UK <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/04\/21\/ukgov_death_dates_smartphones_iot_security\/\" rel=\"noopener\">aim to help tackle the problem<\/a>, though short of pushing device-bricking updates at end of life, it&#8217;s difficult to see how to stop people using an old gadget that still serves its intended purpose.<\/p>\n<p>In other alarming Switchzilla router security news, the US-HQ&#8217;d company is offering 5G connectivity baked into ruggedised routers <a target=\"_blank\" href=\"https:\/\/www.theregister.com\/2021\/06\/18\/cisco_unveils_new_5g_routers\/\" rel=\"noopener\">intended for use in cars and off-road vehicles<\/a>. \u00ae<\/p>\n<p> READ MORE <a href=\"https:\/\/go.theregister.com\/feed\/www.theregister.com\/2021\/08\/05\/cisco_rv340_series_router_vulns_patched\/\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Patches issued for two CVE-rated vulns Cisco has published patches for critical vulns affecting the web management interface for some of its Small Business Dual WAN Gigabit routers \u2013 including a 9.8-rated nasty.\u2026  READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[63],"tags":[],"class_list":["post-42160","post","type-post","status-publish","format-standard","hentry","category-the-register"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Got a cheap Cisco router in your home office? 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