{"id":28155,"date":"2025-04-21T01:28:22","date_gmt":"2025-04-21T01:28:22","guid":{"rendered":""},"modified":"2025-08-30T04:38:55","modified_gmt":"2025-08-30T10:38:55","slug":"cve-2023-41056-heap-overflow-vulnerability-in-redis-in-memory-database","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2023-41056-heap-overflow-vulnerability-in-redis-in-memory-database\/","title":{"rendered":"<strong>CVE-2023-41056: Heap Overflow Vulnerability in Redis In-Memory Database<\/strong>"},"content":{"rendered":"<p><strong>Overview<\/strong><\/p>\n<p>Redis, a renowned in-memory database storing keys and values, has a severe vulnerability, identified as CVE-2023-41056. This flaw originates from the incorrect handling of memory buffer resizing, which can result in an integer overflow, leading to a heap overflow. The vulnerability is of significant concern as it could potentially lead to <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-29017-remote-code-execution-in-code-astro-internet-banking-system-2-0-0\/\"  data-wpil-monitor-id=\"32850\">remote code execution<\/a>, posing a serious threat to the integrity and security of systems running affected versions of Redis. This can result in systemic compromise or <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-50350-broken-cryptographic-algorithm-leads-to-potential-data-leakage-in-hcl-dryice-myxalytics\/\"  data-wpil-monitor-id=\"35542\">data leakage<\/a>, making it a potentially catastrophic issue for organizations that depend on Redis for their operations.<\/p>\n<p><strong>Vulnerability Summary<\/strong><\/p>\n<p>CVE ID: CVE-2023-41056<br \/>\nSeverity: High (8.1 CVSS Score)<br \/>\nAttack Vector: Network<br \/>\nPrivileges Required: Low<br \/>\nUser Interaction: None<br \/>\nImpact: <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-3914-potential-arbitrary-file-uploads-and-system-compromise-in-aeropage-sync-for-airtable-wordpress-plugin\/\"  data-wpil-monitor-id=\"41064\">System compromise<\/a>, data leakage<\/p>\n<p><strong>Affected Products<\/strong><\/p><div id=\"ameeb-1531887255\" class=\"ameeb-content-2 ameeb-entity-placement\"><div style=\"border-left: 4px solid #555; padding-left: 20px; margin: 48px 0; font-family: Roboto, sans-serif; color: #ffffff; line-height: 1.6; max-width: 700px;\">\r\n  <h2 style=\"margin-top: 0; font-size: 20px; font-weight: 600; display: flex; align-items: center;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"display: inline-flex; align-items: center; margin-right: 8px;\">\r\n      <img decoding=\"async\" src=\"https:\/\/www.ameeba.com\/blog\/wp-content\/uploads\/2025\/10\/Best-App-icon-Ameeba.png\" alt=\"Ameeba Chat Icon\" style=\"width: 40px; height: 40px;\" \/>\r\n    <\/a>\r\n    A new way to communicate\r\n  <\/h2>\r\n\r\n  <p style=\"margin-bottom: 12px;\">\r\n    Ameeba Chat is built on encrypted identity, not personal profiles.\r\n  <\/p>\r\n\r\n  <p style=\"margin-bottom: 16px;\">\r\n    Message, call, share files, and coordinate with identities kept separate.\r\n  <\/p>\r\n\r\n  <ul style=\"list-style: none; padding-left: 0; margin-bottom: 20px;\">\r\n    <li>\u2022 Encrypted identity<\/li>\r\n    <li>\u2022 Ameeba Chat authenticates access<\/li>\r\n    <li>\u2022 Aliases and categories<\/li>\r\n    <li>\u2022 End-to-end encrypted chat, calls, and files<\/li>\r\n    <li>\u2022 Secure notes for sensitive information<\/li>\r\n  <\/ul>\r\n\r\n  <p style=\"font-style: italic; font-weight: 600; margin-bottom: 24px;\">\r\n    Private communication, rethought.\r\n  <\/p>\r\n\r\n  <div style=\"display: flex; flex-wrap: wrap; gap: 12px;\">\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\/download\" style=\"background-color: #ffffff; color: #000000; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Download Ameeba Chat<\/a>\r\n    <a href=\"https:\/\/www.ameeba.com\/chat\" style=\"border: 1px solid #ffffff; color: #ffffff; padding: 10px 20px; text-decoration: none; border-radius: 6px; font-weight: 500;\">Learn More<\/a>\r\n  <\/div>\r\n<\/div>\r\n<\/div>\n<p>Product | Affected Versions<\/p>\n<p>Redis   | Below 7.0.15<br \/>\nRedis   | Below 7.2.4<\/p>\n<p><strong>How the Exploit Works<\/strong><\/p>\n<p>The <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-0467-kernel-memory-exploit-in-guest-vms\/\"  data-wpil-monitor-id=\"40414\">exploit targets the memory<\/a> buffer resizing mechanism within Redis. When an attacker sends a specifically crafted input to the Redis server, it triggers an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-35004-critical-integer-overflow-vulnerability-in-gtkwave-3-3-115\/\"  data-wpil-monitor-id=\"41063\">integer overflow<\/a> during the resizing process. This overflow then leads to a heap overflow, a memory corruption issue that can grant the attacker the ability to execute <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2023-42970-use-after-free-vulnerability-in-multiple-apple-platforms-may-lead-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"33027\">arbitrary code<\/a> on the affected system. Depending on the level of privileges associated with the Redis service, this could <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-23391-incorrect-privilege-assignment-in-suse-rancher-potentially-leading-to-system-compromise\/\"  data-wpil-monitor-id=\"33080\">potentially lead to full system<\/a> compromise.<\/p>\n<p><strong>Conceptual Example Code<\/strong><\/p><div id=\"ameeb-2083551400\" class=\"ameeb-content ameeb-entity-placement\"><div class=\"poptin-embedded\" data-id=\"f6b387694f681\"><\/div>\r\n\r\n\r\n\r\n\r\n\r\n<\/div>\n<p>Here is a conceptual example of how an <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2021-27289-replay-attack-vulnerability-uncovered-in-zigbee-smart-home-kit\/\"  data-wpil-monitor-id=\"35541\">attacker might exploit this vulnerability<\/a>, using a malicious payload sent to the Redis server:<\/p>\n<pre><code class=\"\" data-line=\"\">POST \/redis\/command HTTP\/1.1\nHost: target.example.com\nContent-Type: application\/json\n{ &quot;command&quot;: &quot;SET key $(python -c &#039;print(&quot;A&quot;*1000000000)&#039;)&quot; }<\/code><\/pre>\n<p>The above <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2025-49526-out-of-bounds-write-vulnerability-in-illustrator-leading-to-arbitrary-code-execution\/\"  data-wpil-monitor-id=\"75211\">code is a simplified illustration<\/a>. In practice, the attacker would craft a complex payload designed to trigger the integer overflow and subsequent heap overflow, <a href=\"https:\/\/www.ameeba.com\/blog\/cve-2024-56406-buffer-overflow-vulnerability-in-perl-leading-to-potential-denial-of-service-and-code-execution\/\"  data-wpil-monitor-id=\"33119\">potentially leading to remote code<\/a> execution.<\/p>\n<p><strong>Mitigation Guidance<\/strong><\/p>\n<p>Users are strongly advised to update their Redis instances to versions 7.0.15 or 7.2.4, which includes patches for this vulnerability. For those unable to update immediately, a web application firewall (WAF) or intrusion detection system (IDS) can be utilized as temporary mitigation to monitor and block potential exploit attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Overview Redis, a renowned in-memory database storing keys and values, has a severe vulnerability, identified as CVE-2023-41056. This flaw originates from the incorrect handling of memory buffer resizing, which can result in an integer overflow, leading to a heap overflow. The vulnerability is of significant concern as it could potentially lead to remote code execution, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[86,80],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-28155","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-buffer-overflow","attack_vector-rce"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28155","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/comments?post=28155"}],"version-history":[{"count":8,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28155\/revisions"}],"predecessor-version":[{"id":67805,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/posts\/28155\/revisions\/67805"}],"wp:attachment":[{"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/media?parent=28155"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/categories?post=28155"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/tags?post=28155"},{"taxonomy":"vendor","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/vendor?post=28155"},{"taxonomy":"product","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/product?post=28155"},{"taxonomy":"attack_vector","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/attack_vector?post=28155"},{"taxonomy":"asset_type","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/asset_type?post=28155"},{"taxonomy":"severity","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/severity?post=28155"},{"taxonomy":"exploit_status","embeddable":true,"href":"https:\/\/www.ameeba.com\/blog\/wp-json\/wp\/v2\/exploit_status?post=28155"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}