{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata — refreshed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2019-1547/","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cves":[],"_cs_exploited":false,"_cs_products":[],"_cs_severities":["medium"],"_cs_tags":["cve-2019-1547","timing-attack","ecdsa"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eCVE-2019-1547 is a security vulnerability impacting Microsoft products. While specific details regarding the exploitation and impact are not fully available in the provided source, the vulnerability is described as related to an ECDSA remote timing attack. Timing attacks exploit the time it takes to execute cryptographic algorithms to potentially reveal sensitive information. Defenders should closely monitor for any updates or advisories from Microsoft regarding this CVE and take necessary patching steps when available. This vulnerability requires further investigation based on product-specific usage and exposure.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003cp\u003eDue to the limited information, the attack chain is based on a general understanding of timing attacks:\u003c/p\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker identifies a target system running a vulnerable version of software leveraging ECDSA.\u003c/li\u003e\n\u003cli\u003eThe attacker sends specially crafted requests to the target system.\u003c/li\u003e\n\u003cli\u003eThe target system processes the request using the vulnerable ECDSA implementation.\u003c/li\u003e\n\u003cli\u003eBy measuring the time it takes for the target to respond to different requests, the attacker gathers timing data.\u003c/li\u003e\n\u003cli\u003eThe attacker analyzes the timing data to infer information about the private key used in the ECDSA implementation.\u003c/li\u003e\n\u003cli\u003eWith sufficient timing data, the attacker may be able to reconstruct portions of the private key.\u003c/li\u003e\n\u003cli\u003eThe attacker uses the reconstructed key material to impersonate the target or decrypt communications.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eThe successful exploitation of CVE-2019-1547 could allow an attacker to potentially recover private keys used in ECDSA implementations. This could lead to unauthorized access, impersonation, or decryption of sensitive data. Without specific details on affected products and deployment scenarios, the exact scope of impact is difficult to ascertain. The severity depends on which systems rely on the vulnerable ECDSA implementation and the sensitivity of the data protected by those systems.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMonitor Microsoft\u0026rsquo;s Security Update Guide for specific details and patches related to CVE-2019-1547 (\u003ca href=\"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1547\"\u003ehttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1547\u003c/a\u003e).\u003c/li\u003e\n\u003cli\u003eImplement network monitoring to detect unusual patterns in network traffic that may indicate timing attacks.\u003c/li\u003e\n\u003cli\u003eConsider deploying web server rules to flag requests with anomalous timing characteristics based on webserver logs.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"/briefs/2024-01-03-cve-2019-1547/","summary":"CVE-2019-1547 is a security vulnerability that could allow a remote timing attack.","title":"CVE-2019-1547 ECDSA Remote Timing Attack Vulnerability","url":"https://feed.craftedsignal.io/briefs/2024-01-03-cve-2019-1547/"}],"language":"en","title":"CraftedSignal Threat Feed — Cve-2019-1547","version":"https://jsonfeed.org/version/1.1"}