{"description":"Trending threats, MITRE ATT\u0026CK coverage, and detection metadata. Fed continuously.","feed_url":"https://feed.craftedsignal.io/vendors/molotovcherry/feed.json","home_page_url":"https://feed.craftedsignal.io/","items":[{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Android-ImageMagick7"],"_cs_severities":["high"],"_cs_tags":["cve-2026-4756","out-of-bounds write","android","imagemagick"],"_cs_type":"advisory","_cs_vendors":["MolotovCherry"],"content_html":"\u003cp\u003eCVE-2026-4756 is an out-of-bounds write vulnerability present in MolotovCherry's Android-ImageMagick7 library.  Specifically, versions prior to 7.1.2-11 are affected.  This vulnerability could allow a malicious actor to write data outside the intended memory buffer while processing image files.  Successful exploitation could potentially lead to arbitrary code execution on the affected Android device. Given the widespread use of Android devices, and the potential for exploitation via malicious image files, this is a significant vulnerability for defenders to be aware of and mitigate.  The vulnerability was reported by the Government Technology Agency of Singapore Cyber Security Group (GovTech CSG).\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eThe attacker crafts a specially crafted image file designed to trigger the out-of-bounds write in Android-ImageMagick7.\u003c/li\u003e\n\u003cli\u003eThe victim downloads or receives the malicious image file (e.g., via MMS, email, or a malicious website).\u003c/li\u003e\n\u003cli\u003eAn application on the Android device (e.g., an image viewer, a social media app, or even the operating system itself) uses the vulnerable Android-ImageMagick7 library to process the image.\u003c/li\u003e\n\u003cli\u003eDuring image processing, the vulnerability is triggered, leading to an out-of-bounds write to memory.\u003c/li\u003e\n\u003cli\u003eThe attacker overwrites critical data structures in memory, potentially including function pointers or other executable code.\u003c/li\u003e\n\u003cli\u003eThe attacker gains control of the program execution flow by manipulating the overwritten memory.\u003c/li\u003e\n\u003cli\u003eThe attacker injects and executes arbitrary code on the device.\u003c/li\u003e\n\u003cli\u003eThe attacker achieves persistence, exfiltrates sensitive data, or performs other malicious activities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-4756 can lead to arbitrary code execution on the affected Android device. This could allow an attacker to gain full control of the device, steal sensitive data (e.g., contacts, photos, financial information), install malware, or use the device as part of a botnet. The impact is significant due to the widespread use of Android devices and the potential for exploitation via common communication channels like MMS and email.  A successful widespread attack could compromise a large number of devices.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Android-ImageMagick7 to version 7.1.2-11 or later to patch CVE-2026-4756.\u003c/li\u003e\n\u003cli\u003eMonitor application logs for errors related to image processing with Android-ImageMagick7 that could indicate exploitation attempts (reference application logging).\u003c/li\u003e\n\u003cli\u003eImplement runtime protections such as address space layout randomization (ASLR) and data execution prevention (DEP) to make exploitation more difficult.\u003c/li\u003e\n\u003cli\u003eConsider using a mobile threat detection solution that can identify and block malicious image files.\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-03T12:00:00Z","date_published":"2024-01-03T12:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-03-android-imagemagick-oob-write/","summary":"CVE-2026-4756 is an out-of-bounds write vulnerability in MolotovCherry Android-ImageMagick7 affecting Android-ImageMagick7 versions before 7.1.2-11, potentially leading to arbitrary code execution.","title":"Android-ImageMagick7 Out-of-Bounds Write Vulnerability (CVE-2026-4756)","url":"https://feed.craftedsignal.io/briefs/2024-01-03-android-imagemagick-oob-write/"},{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Android-ImageMagick7"],"_cs_severities":["medium"],"_cs_tags":["cve-2026-33856","memory leak","denial of service","android"],"_cs_type":"advisory","_cs_vendors":["MolotovCherry"],"content_html":"\u003cp\u003eCVE-2026-33856 describes a memory leak vulnerability affecting MolotovCherry Android-ImageMagick7 versions prior to 7.1.2-11. This vulnerability, classified as a Missing Release of Memory after Effective Lifetime (CWE-401), could be exploited by a malicious actor to cause a denial-of-service condition. The vulnerability resides within the Android-ImageMagick7 library, a port of ImageMagick to the Android platform. An attacker could potentially trigger the memory leak by submitting crafted image files for processing, exhausting available memory resources, and ultimately crashing the application or device. Defenders should prioritize patching vulnerable versions of Android-ImageMagick7.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker crafts a malicious image file specifically designed to trigger the memory leak in Android-ImageMagick7.\u003c/li\u003e\n\u003cli\u003eThe attacker deploys the malicious image to a web server or other publicly accessible location.\u003c/li\u003e\n\u003cli\u003eA user downloads an application that utilizes the vulnerable Android-ImageMagick7 library.\u003c/li\u003e\n\u003cli\u003eThe user visits a website or opens an application that loads the attacker's crafted image file using Android-ImageMagick7.\u003c/li\u003e\n\u003cli\u003eAndroid-ImageMagick7 processes the image file, allocating memory for image operations.\u003c/li\u003e\n\u003cli\u003eDue to the vulnerability (CWE-401), the allocated memory is not properly released after it's no longer needed, leading to a memory leak.\u003c/li\u003e\n\u003cli\u003eRepeated processing of similar malicious images progressively consumes available memory.\u003c/li\u003e\n\u003cli\u003eThe system eventually runs out of memory, causing the application to crash or the entire Android device to become unresponsive (Denial of Service).\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-33856 can lead to a denial-of-service condition on affected Android devices. While the provided information doesn't specify the number of victims or targeted sectors, the impact is significant for applications relying on Android-ImageMagick7 for image processing. An attacker could potentially disrupt services and cause data loss due to application crashes.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Android-ImageMagick7 to version 7.1.2-11 or later to remediate CVE-2026-33856 (reference: CVE-2026-33856).\u003c/li\u003e\n\u003cli\u003eMonitor applications that use Android-ImageMagick7 for excessive memory consumption that could indicate exploitation of this vulnerability.\u003c/li\u003e\n\u003cli\u003eDeploy the Sigma rules below to detect suspicious process creation related to image processing that may indicate exploitation.\u003c/li\u003e\n\u003cli\u003eImplement input validation on image files processed by Android-ImageMagick7 to prevent processing of maliciously crafted files.\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/2024-01-02-android-imagemagick-memory-leak/","summary":"A missing release of memory after effective lifetime vulnerability exists in MolotovCherry Android-ImageMagick7 before version 7.1.2-11, potentially leading to denial of service.","title":"Android-ImageMagick7 Memory Leak Vulnerability (CVE-2026-33856)","url":"https://feed.craftedsignal.io/briefs/2024-01-02-android-imagemagick-memory-leak/"},{"_cs_actors":[],"_cs_cpes":[],"_cs_cves":[],"_cs_exploited":false,"_cs_has_poc":false,"_cs_poc_references":[],"_cs_products":["Android-ImageMagick7"],"_cs_severities":["critical"],"_cs_tags":["cve-2026-4755","android","imagemagick","input-validation","remote-code-execution"],"_cs_type":"advisory","_cs_vendors":["MolotovCherry"],"content_html":"\u003cp\u003eA critical vulnerability, CVE-2026-4755, has been identified in MolotovCherry Android-ImageMagick7. This vulnerability, classified as CWE-20 (Improper Input Validation), affects versions prior to 7.1.2-11.  The vulnerability allows for remote unauthenticated attackers to cause a denial of service, or potentially remote code execution.  The issue stems from a failure to properly validate user-supplied input, which could lead to unexpected behavior or memory corruption within the application. Successful exploitation of this vulnerability could have severe consequences, including the compromise of sensitive data or complete system takeover. The Government Technology Agency of Singapore Cyber Security Group (GovTech CSG) reported this vulnerability.\u003c/p\u003e\n\u003ch2 id=\"attack-chain\"\u003eAttack Chain\u003c/h2\u003e\n\u003col\u003e\n\u003cli\u003eAttacker crafts a malicious image with specially crafted metadata or pixel data.\u003c/li\u003e\n\u003cli\u003eThe attacker hosts the malicious image on a web server or delivers it via email/messaging.\u003c/li\u003e\n\u003cli\u003eThe user downloads or receives the malicious image on their Android device.\u003c/li\u003e\n\u003cli\u003eThe Android device uses Android-ImageMagick7 to process the image (e.g., displaying the image in a gallery app, using it as an avatar, or processing it in a third-party application that relies on the library).\u003c/li\u003e\n\u003cli\u003eAndroid-ImageMagick7 fails to properly validate the malicious image data.\u003c/li\u003e\n\u003cli\u003eDue to the improper input validation, the application may crash, enter an infinite loop, or execute arbitrary code injected by the attacker.\u003c/li\u003e\n\u003cli\u003eIf code execution is achieved, the attacker can gain control of the application's context and potentially escalate privileges on the Android device.\u003c/li\u003e\n\u003cli\u003eThe attacker can then access sensitive data, install malware, or perform other malicious activities.\u003c/li\u003e\n\u003c/ol\u003e\n\u003ch2 id=\"impact\"\u003eImpact\u003c/h2\u003e\n\u003cp\u003eSuccessful exploitation of CVE-2026-4755 can have significant repercussions. An attacker could potentially achieve remote code execution, gaining unauthorized access to sensitive data, or even compromising the entire Android device. Given the widespread use of Android-ImageMagick7, a successful exploit could impact a large number of users across various sectors. If the vulnerable application is a core system component, exploitation may result in complete device compromise.\u003c/p\u003e\n\u003ch2 id=\"recommendation\"\u003eRecommendation\u003c/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUpgrade Android-ImageMagick7 to version 7.1.2-11 or later to patch CVE-2026-4755.\u003c/li\u003e\n\u003cli\u003eMonitor application logs for error messages related to image processing, which could indicate exploitation attempts. Deploy the Sigma rule \u0026quot;Detect Suspicious ImageMagick Error Messages\u0026quot; to identify potential exploitation attempts based on log patterns.\u003c/li\u003e\n\u003cli\u003eImplement input validation and sanitization measures in applications that use Android-ImageMagick7 to mitigate the risk of exploitation, as the root cause is improper input validation (CWE-20).\u003c/li\u003e\n\u003c/ul\u003e\n","date_modified":"2024-01-02T10:00:00Z","date_published":"2024-01-02T10:00:00Z","id":"https://feed.craftedsignal.io/briefs/2024-01-android-imagemagick-cve-2026-4755/","summary":"A CWE-20 improper input validation vulnerability exists in MolotovCherry Android-ImageMagick7 before version 7.1.2-11, potentially allowing for remote code execution or denial of service.","title":"Android-ImageMagick7 Improper Input Validation Vulnerability (CVE-2026-4755)","url":"https://feed.craftedsignal.io/briefs/2024-01-android-imagemagick-cve-2026-4755/"}],"language":"en","title":"CraftedSignal Threat Feed - MolotovCherry","version":"https://jsonfeed.org/version/1.1"}