{"id":"CVE-2021-32672","aliases":["ALPINE-CVE-2021-32672","AZL-6847","BELL-CVE-2021-32672","BIT-keydb-2021-32672","BIT-redis-2021-32672","BIT-valkey-2021-32672","DEBIAN-CVE-2021-32672","DLA-2810-1","DSA-5001-1","EUVD-2021-19483","GHSA-9mj9-xx53-qmxm","MGASA-2021-0483","OESA-2021-1394","OESA-2022-1866","SUSE-SU-2021:3772-1","UBUNTU-CVE-2021-32672","USN-5221-1","openSUSE-SU-2021:3772-1","openSUSE-SU-2024:11563-1"],"status":"published","title":"Vulnerability in Lua Debugger in Redis","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0169,"percentile":0.77252,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-125"],"published":"2021-10-04T17:40:10Z","modified":"2026-11-03T06:32:40Z","fixes":[{"ecosystem":"Alpine:v3.11","package":"redis","fixed_in":["5.0.14-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"redis","fixed_in":["5.0.14-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"redis","fixed_in":["6.0.16-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"redis","fixed_in":["6.2.6-r0"],"sources":["osv"]},{"ecosystem":"Azure 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in Lua Debugger in Redis","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T17:40:10Z","modified":"2024-08-03T23:25:31.094Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:33:07.014772Z"}],"euvd":[{"id":"EUVD-2021-19483","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T17:40:10Z","modified":"2024-08-03T23:25:31Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:24:35.855495Z"}],"nvd":[{"id":"CVE-2021-32672","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T18:15:08.78Z","modified":"2026-06-17T03:53:23.54Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:06:59.314106Z"}],"osv":[{"id":"ALPINE-CVE-2021-32672","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T18:15:08.78Z","modified":"2026-11-03T06:32:40.56091999Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T07:17:02.90744Z"},{"id":"AZL-6847","title":"CVE-2021-32672 affecting package redis for versions less than 6.2.6-1","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T18:15:08Z","modified":"2026-04-21T04:38:25.70327Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:08.630357Z"},{"id":"BELL-CVE-2021-32672","title":"CVE-2021-32672 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:15:48.79449Z","modified":"2026-01-26T09:49:00.015976Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:16.5265Z"},{"id":"CVE-2021-32672","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T18:15:08.78Z","modified":"2026-10-24T14:21:14.58345852Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:19.793849Z"},{"id":"DEBIAN-CVE-2021-32672","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T18:15:08.78Z","modified":"2026-10-23T18:03:03.119984994Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:35.233346Z"},{"id":"OESA-2021-1394","title":"redis security update","description":"Redis is an advanced key-value store. It is often referred to as a dattructure server since keys can contain strings, hashes ,lists, sets anorted sets.\r\n\r\nSecurity Fix(es):\r\n\r\nRedis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.(CVE-2021-32672)","status":"published","published":"2021-10-15T11:04:40Z","modified":"2026-08-18T01:16:09.853389739Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"OESA-2022-1866","title":"redis6 security update","description":"Redis is an advanced key-value store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets and sorted sets. You can run atomic operations on these types, like appending to a string; incrementing the value in a hash; pushing to a list; computing set intersection, union and difference; or getting the member with highest ranking in a sorted set. In order to achieve its outstanding performance, Redis works with an in-memory dataset. Depending on your use case, you can persist it either by dumping the dataset to disk every once in a while, or by appending each command to a log. Redis also supports trivial-to-setup master-slave replication, with very fast non-blocking first synchronization, auto-reconnection on net split and so forth. Other features include Transactions, Pub/Sub, Lua scripting, Keys with a limited time-to-live, and configuration settings to make Redis behave like a cache. You can use Redis from most programming languages also.\r\n\r\nSecurity Fix(es):\r\n\r\nRedis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.(CVE-2021-32672)","status":"published","published":"2022-08-26T11:05:08Z","modified":"2026-08-18T01:17:16.818698707Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:39.528805Z"},{"id":"UBUNTU-CVE-2021-32672","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2021-10-04T18:15:00Z","modified":"2026-02-04T04:38:09.705191Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:27.332852Z"},{"id":"BIT-keydb-2021-32672","title":"Vulnerability in Lua Debugger in Redis","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2024-08-22T19:29:26.35Z","modified":"2026-09-08T08:48:06.807589626Z","updated_at":"2026-11-02T15:28:32.162822Z"},{"id":"BIT-redis-2021-32672","title":"Vulnerability in Lua Debugger in Redis","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2024-03-06T11:08:05.073Z","modified":"2026-09-08T08:48:19.036392197Z","updated_at":"2026-11-02T15:28:35.111822Z"},{"id":"BIT-valkey-2021-32672","title":"Vulnerability in Lua Debugger in Redis","description":"Redis is an open source, in-memory database that persists on disk. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer. This issue affects all versions of Redis with Lua debugging support (3.2 or newer). The problem is fixed in versions 6.2.6, 6.0.16 and 5.0.14.","status":"published","published":"2024-08-22T19:45:46.062Z","modified":"2026-03-13T22:11:03.07267Z","updated_at":"2026-11-02T15:28:36.104787Z"},{"id":"DLA-2810-1","title":"redis - security update","status":"published","published":"2021-11-05T00:00:00Z","modified":"2026-03-09T01:20:44.909683Z","updated_at":"2026-11-02T15:46:11.189256Z"},{"id":"DSA-5001-1","title":"redis - security update","status":"published","published":"2021-11-05T00:00:00Z","modified":"2026-03-09T02:08:52.761686Z","updated_at":"2026-11-02T15:46:17.543497Z"},{"id":"MGASA-2021-0483","title":"Updated redis packages fix security vulnerability","description":"CVE-2021-32626: Specially crafted Lua scripts executing in Redis can cause\nthe heap-based Lua stack to be overflowed, due to incomplete checks for this\ncondition. This can result with heap corruption and potentially remote code\nexecution.\nCVE-2021-32627: An integer overflow bug in Redis 5.0 or newer can be exploited\nto corrupt the heap and potentially result with remote code execution.\nCVE-2021-32628: An integer overflow bug in the ziplist data structure used by\nall versions of Redis can be exploited to corrupt the heap and potentially\nresult with remote code execution.\nCVE-2021-32672: When using the Redis Lua Debugger, users can send malformed\nrequests that cause the debugger’s protocol parser to read data beyond the\nactual buffer.\nCVE-2021-32675: When parsing an incoming Redis Standard Protocol (RESP)\nrequest, Redis allocates memory according to user-specified values which\ndetermine the number of elements (in the multi-bulk header) and size of each\nelement (in the bulk header).\nCVE-2021-32687: An integer overflow bug affecting all versions of Redis can\nbe exploited to corrupt the heap and potentially be used to leak arbitrary\ncontents of the heap or trigger remote code execution.\nCVE-2021-32762: The redis-cli command line tool and redis-sentinel service\nmay be vulnerable to integer overflow when parsing specially crafted large\nmulti-bulk network replies.\nCVE-2021-41099: An integer overflow bug in the underlying string library can\nbe used to corrupt the heap and potentially result with denial of service or\nremote code execution.\n","status":"published","published":"2021-10-20T21:28:32Z","modified":"2026-04-16T04:43:56.31639699Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2021:3772-1","title":"Security update for redis","description":"This update for redis fixes the following issues:\n\t  \n- CVE-2021-32627: Fixed integer to heap buffer overflows with streams (bsc#1191305).\n- CVE-2021-32628: Fixed integer to heap buffer overflows handling ziplist-encoded data types (bsc#1191305).\n- CVE-2021-32687: Fixed integer to heap buffer overflow with intsets (bsc#1191302).\n- CVE-2021-32762: Fixed integer to heap buffer overflow issue in redis-cli and redis-sentinel (bsc#1191300).\n- CVE-2021-32626: Fixed heap buffer overflow caused by specially crafted Lua scripts (bsc#1191306).\n- CVE-2021-32672: Fixed random heap reading issue with Lua Debugger (bsc#1191304).\n- CVE-2021-32675: Fixed Denial Of Service when processing RESP request payloads with a large number of elements on many connections (bsc#1191303).\n- CVE-2021-41099: Fixed integer to heap buffer overflow handling certain string commands and network payloads (bsc#1191299).\n","status":"published","published":"2021-11-23T14:48:09Z","modified":"2026-02-04T04:28:05.164121Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2024:11563-1","title":"redis-6.2.6-1.1 on GA media","description":"These are all security issues fixed in the redis-6.2.6-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:32:06.314297Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2021:3772-1","title":"Security update for redis","description":"This update for redis fixes the following issues:\n\t  \n- CVE-2021-32627: Fixed integer to heap buffer overflows with streams (bsc#1191305).\n- CVE-2021-32628: Fixed integer to heap buffer overflows handling ziplist-encoded data types (bsc#1191305).\n- CVE-2021-32687: Fixed integer to heap buffer overflow with intsets (bsc#1191302).\n- CVE-2021-32762: Fixed integer to heap buffer overflow issue in redis-cli and redis-sentinel (bsc#1191300).\n- CVE-2021-32626: Fixed heap buffer overflow caused by specially crafted Lua scripts (bsc#1191306).\n- CVE-2021-32672: Fixed random heap reading issue with Lua Debugger (bsc#1191304).\n- CVE-2021-32675: Fixed Denial Of Service when processing RESP request payloads with a large number of elements on many connections (bsc#1191303).\n- CVE-2021-41099: Fixed integer to heap buffer overflow handling certain string commands and network payloads (bsc#1191299).\n","status":"published","published":"2021-11-23T14:48:08Z","modified":"2025-05-02T04:10:41.075488Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"USN-5221-1","title":"redis vulnerabilities","description":"It was discovered that Redis incorrectly handled certain specially crafted\nLua scripts. A remote attacker could possibly use this issue to cause a\ndenial of service or execute arbitrary code. (CVE-2021-32626)\n\nIt was discovered that Redis incorrectly handled some malformed requests\nwhen using Redis Lua Debugger. A remote attacker could possibly use this\nissue to cause a denial of service or other unspecified impact. This issue\nonly affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM. (CVE-2021-32672)\n\nIt was discovered that Redis incorrectly handled certain Redis Standard\nProtocol (RESP) requests. A remote attacker could possibly use this issue\nto cause a denial of service. (CVE-2021-32675)\n\nIt was discovered that Redis incorrectly handled some configuration\nparameters with specially crafted network payloads. A remote attacker\ncould possibly use this issue to cause a denial of service or execute\narbitrary code. Vulnerabilities CVE-2021-32627 and CVE-2021-41099\nonly affected Ubuntu 18.04 ESM and Ubuntu 20.04 ESM.\n(CVE-2021-32627, CVE-2021-32628, CVE-2021-32687, CVE-2021-41099).\n\nIt was discovered that Redis incorrectly handled memory when processing\ncertain input in 32-bit systems. A remote attacker could possibly use\nthis issue to cause a denial of service or execute arbitrary code.\nOne vulnerability (CVE-2021-32761) only affected Ubuntu 14.04 ESM,\nUbuntu 16.04 ESM and Ubuntu 18.04 ESM and another vulnerability\n(CVE-2021-21309) only affected Ubuntu 18.04 ESM.\n(CVE-2021-32761, CVE-2021-21309).\n","status":"published","published":"2022-08-03T10:10:42Z","modified":"2026-06-29T13:48:57.518583234Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}