{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/products/electerm/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":["electerm"],"_cs_severities":["critical"],"_cs_tags":["command-injection","electerm","npm"],"_cs_type":"advisory","_cs_vendors":[],"content_html":"\u003cp\u003eA critical command injection vulnerability has been identified in Electerm, specifically affecting users who install the application via \u003ccode\u003enpm install -g electerm\u003c/code\u003e on Linux systems. The vulnerability resides within the \u003ccode\u003erunLinux()\u003c/code\u003e function in \u003ccode\u003egithub.com/elcterm/electerm/npm/install.js\u003c/code\u003e. This function lacks proper validation when appending remote version strings into an \u003ccode\u003eexec(\u0026quot;rm -rf ...\u0026quot;)\u003c/code\u003e command. An attacker capable of controlling the remote release metadata (e.g., version string, release name) served by Electerm\u0026rsquo;s update server could exploit this flaw to execute arbitrary system commands. This could lead to tampering with local files and a complete compromise of development or runtime assets. This vulnerability affects Electerm versions prior to 3.3.8.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker gains control over the Electerm update server or performs a man-in-the-middle attack.\u003c/li\u003e\n\u003cli\u003eThe attacker crafts malicious release metadata, including a crafted version string containing command injection payloads.\u003c/li\u003e\n\u003cli\u003eA user on a Linux system executes \u003ccode\u003enpm install -g electerm\u003c/code\u003e to install or update Electerm.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003einstall.js\u003c/code\u003e script fetches the malicious release metadata from the compromised update server.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003erunLinux()\u003c/code\u003e function appends the attacker-controlled version string directly into an \u003ccode\u003eexec(\u0026quot;rm -rf ...\u0026quot;)\u003c/code\u003e command.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eexec()\u003c/code\u003e function executes the command, resulting in arbitrary command execution with the privileges of the user running \u003ccode\u003enpm install\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eThe attacker can then tamper with local files, install backdoors, or escalate privileges.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves complete system compromise, potentially exfiltrating sensitive data or using the compromised system as a pivot point.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of this vulnerability allows attackers to execute arbitrary system commands on the victim\u0026rsquo;s machine. This can lead to complete system compromise, including unauthorized access to sensitive data, installation of malware, and further propagation of the attack within the network. Given the nature of \u003ccode\u003enpm install\u003c/code\u003e, developers are primarily at risk. The impact could be significant for development environments.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the following rule to detect command injection attempts within npm installations referencing the electerm package: \u003ccode\u003eElecterm NPM install Command Injection\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic for connections to unexpected or suspicious update servers that could be serving malicious Electerm release metadata using network connection logs.\u003c/li\u003e\n\u003cli\u003eWhile the vulnerability is patched in later versions, ensure users are aware of the risks associated with running older versions of Electerm (\u003ccode\u003e\u0026lt; 3.3.8\u003c/code\u003e).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"/briefs/2024-01-electerm-command-injection/","summary":"A command injection vulnerability exists in electerm's install.js due to insufficient validation in the runLinux() function, allowing attackers to execute arbitrary commands by manipulating remote release metadata.","title":"Electerm Command Injection Vulnerability via runLinux Function","url":"https://feed.craftedsignal.io/briefs/2024-01-electerm-command-injection/"}],"language":"en","title":"CraftedSignal Threat Feed — Electerm","version":"https://jsonfeed.org/version/1.1"}