{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/cpes/cpe2.3amicrosoftdirectx9.0b/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":["cpe:2.3:a:microsoft:directx:7.0:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:7.0a:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:7.1:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:8.1:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:8.1b:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:9.0:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:9.0a:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:9.0b:*:*:*:*:*:*:*","cpe:2.3:a:microsoft:directx:9.0c:*:*:*:*:*:*:*","cpe:2.3:o:microsoft:windows_2000:*:sp4:*:*:*:*:*:*","cpe:2.3:o:microsoft:windows_2003_server:*:sp2:*:*:*:*:*:*","cpe:2.3:o:microsoft:windows_2003_server:*:sp2:itanium:*:*:*:*:*","cpe:2.3:o:microsoft:windows_2003_server:*:sp2:x64:*:*:*:*:*","cpe:2.3:o:microsoft:windows_server_2003:*:sp2:*:*:*:*:*:*","cpe:2.3:o:microsoft:windows_xp:*:sp2:*:*:*:*:*:*","cpe:2.3:o:microsoft:windows_xp:*:sp2:professional_x64:*:*:*:*:*","cpe:2.3:o:microsoft:windows_xp:*:sp3:*:*:*:*:*:*"],"_cs_cves":[{"id":"CVE-2009-1537"}],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["DirectX"],"_cs_severities":["critical"],"_cs_tags":["CVE-2009-1537","directx","null-byte-overwrite","code-execution"],"_cs_type":"advisory","_cs_vendors":["Microsoft"],"content_html":"\u003cp\u003eCVE-2009-1537 details a critical NULL byte overwrite vulnerability within Microsoft DirectX, specifically affecting the QuickTime Movie Parser Filter located in quartz.dll within DirectShow. The vulnerability stems from improper handling of crafted QuickTime media files, which could allow a remote attacker to overwrite memory with NULL bytes. Successful exploitation of this vulnerability could lead to arbitrary code execution on the targeted system. Microsoft addressed this vulnerability in their MS09-028 security bulletin. This issue poses a significant risk because DirectX is a core component of Windows, making a wide range of systems potentially vulnerable.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAn attacker crafts a malicious QuickTime media file designed to exploit the NULL byte overwrite vulnerability.\u003c/li\u003e\n\u003cli\u003eThe attacker delivers the crafted media file to the target via a website, email attachment, or other means.\u003c/li\u003e\n\u003cli\u003eThe user opens the malicious media file using an application that relies on DirectShow and the QuickTime Movie Parser Filter (quartz.dll).\u003c/li\u003e\n\u003cli\u003eDirectShow attempts to parse the malformed QuickTime file.\u003c/li\u003e\n\u003cli\u003eDue to the NULL byte overwrite vulnerability (CVE-2009-1537) in quartz.dll, the attacker can overwrite memory with controlled NULL bytes.\u003c/li\u003e\n\u003cli\u003eBy carefully crafting the malicious media file, the attacker overwrites critical data structures within the application\u0026rsquo;s memory space.\u003c/li\u003e\n\u003cli\u003eThis memory corruption enables the attacker to gain control of the program execution flow.\u003c/li\u003e\n\u003cli\u003eThe attacker executes arbitrary code on the victim\u0026rsquo;s machine with the privileges of the application processing the media file.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2009-1537 allows a remote attacker to execute arbitrary code on the targeted system. This could lead to complete system compromise, data theft, malware installation, or other malicious activities. Given the ubiquitous nature of DirectX on Windows systems, a successful widespread exploitation could have significant impact across various sectors and a potentially large number of victims.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eApply the mitigations outlined in Microsoft Security Bulletin MS09-028 to patch CVE-2009-1537.\u003c/li\u003e\n\u003cli\u003eEnable Sysmon process creation logging and deploy the following Sigma rule to detect potential exploitation attempts.\u003c/li\u003e\n\u003cli\u003eDiscontinue use of the affected product if mitigations are unavailable, as stated in the CISA KEV entry.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2026-05-20T17:31:33Z","date_published":"2026-05-20T17:31:33Z","id":"https://feed.craftedsignal.io/briefs/2026-05-directx-null-byte-overwrite/","summary":"Microsoft DirectX contains a NULL byte overwrite vulnerability in the QuickTime Movie Parser Filter (quartz.dll) in DirectShow, potentially allowing remote attackers to execute arbitrary code via a crafted QuickTime media file.","title":"CVE-2009-1537 - Microsoft DirectX NULL Byte Overwrite Vulnerability","url":"https://feed.craftedsignal.io/briefs/2026-05-directx-null-byte-overwrite/"}],"language":"en","title":"CraftedSignal Threat Feed — Cpe:2.3:a:microsoft:directx:9.0b:*:*:*:*:*:*:*","version":"https://jsonfeed.org/version/1.1"}