{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/tags/cve-2026-28212/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[{"cvss":7.5,"id":"CVE-2026-28212"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Firebird"],"_cs_severities":["medium"],"_cs_tags":["firebird","denial-of-service","cve-2026-28212"],"_cs_type":"advisory","_cs_vendors":["Firebird"],"content_html":"\u003cp\u003eFirebird is an open-source relational database management system. A denial-of-service vulnerability exists in Firebird versions prior to 6.0.0, 5.0.4, 4.0.7 and 3.0.14 due to improper handling of \u003ccode\u003eop_slice\u003c/code\u003e network packets. Specifically, the server passes an unprepared structure containing a null pointer to the \u003ccode\u003eSDL_info()\u003c/code\u003e function. An unauthenticated attacker can exploit this vulnerability by sending a specially crafted packet to the server's network port, causing a null pointer dereference and subsequent server crash. This vulnerability, identified as CVE-2026-28212, can disrupt database services, affecting applications reliant on the Firebird database. The vulnerability was patched in versions 6.0.0, 5.0.4, 4.0.7 and 3.0.14.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker identifies a vulnerable Firebird server running a version prior to 6.0.0, 5.0.4, 4.0.7 or 3.0.14.\u003c/li\u003e\n\u003cli\u003eAttacker crafts a malicious \u003ccode\u003eop_slice\u003c/code\u003e network packet specifically designed to trigger the vulnerability.\u003c/li\u003e\n\u003cli\u003eAttacker establishes a network connection to the Firebird server's port (typically 3050).\u003c/li\u003e\n\u003cli\u003eAttacker sends the crafted \u003ccode\u003eop_slice\u003c/code\u003e packet to the Firebird server.\u003c/li\u003e\n\u003cli\u003eThe server processes the malicious packet, passing an unprepared structure with a null pointer to the \u003ccode\u003eSDL_info()\u003c/code\u003e function.\u003c/li\u003e\n\u003cli\u003eThe \u003ccode\u003eSDL_info()\u003c/code\u003e function attempts to dereference the null pointer.\u003c/li\u003e\n\u003cli\u003eA null pointer dereference occurs, leading to a server crash.\u003c/li\u003e\n\u003cli\u003eThe Firebird database server becomes unavailable, resulting in a denial-of-service condition.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-28212 results in a denial-of-service condition, rendering the Firebird database server unavailable. This can disrupt applications and services that rely on the database, leading to data unavailability and potential business interruption. While the vulnerability itself does not lead to data compromise, the loss of availability can have significant operational and financial consequences. This issue affects versions of Firebird prior to 6.0.0, 5.0.4, 4.0.7, and 3.0.14.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Firebird database servers to version 6.0.0, 5.0.4, 4.0.7 or 3.0.14 or later to patch CVE-2026-28212.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rule \u003ccode\u003eDetect Firebird SDL_info Null Pointer Dereference\u003c/code\u003e to identify potential exploitation attempts by detecting network connections followed by server crashes.\u003c/li\u003e\n\u003cli\u003eMonitor network traffic to Firebird servers for unusual or malformed packets using the \u003ccode\u003eDetect Malformed Firebird Packets\u003c/code\u003e Sigma rule, particularly focusing on packets directed to port 3050.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-02T12:00:00Z","date_published":"2024-01-02T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-firebird-dos/","summary":"An unauthenticated attacker can cause a denial-of-service condition on vulnerable Firebird database servers by sending a specially crafted network packet that triggers a null pointer dereference.","title":"Firebird Database Server Denial-of-Service Vulnerability (CVE-2026-28212)","url":"https://feed.craftedsignal.io/briefs/2024-01-firebird-dos/"}],"language":"en","title":"CraftedSignal Threat Feed - Cve-2026-28212","version":"https://jsonfeed.org/version/1.1"}