{"id":"CVE-2024-12084","aliases":["ALPINE-CVE-2024-12084","AZL-55646","AZL-55691","BELL-CVE-2024-12084","DEBIAN-CVE-2024-12084","DSA-5843-1","EUVD-2024-50580","GHSA-85h7-m8c3-v9wc","GHSA-p5pg-x43v-mvqj","MGASA-2025-0019","OESA-2025-1061","OESA-2025-1064","RHBA-2025:6470","SUSE-SU-2025:0156-1","SUSE-SU-2025:20122-1","SUSE-SU-2025:20223-1","SUSE-SU-2026:2038-1","SUSE-SU-2026:2048-1","SUSE-SU-2026:2083-1","SUSE-SU-2026:21726-1","UBUNTU-CVE-2024-12084","USN-7206-1","openSUSE-SU-2025:14665-1"],"status":"published","title":"Rsync: heap buffer overflow in rsync due to improper checksum length handling","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 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heap buffer overflow in rsync due to improper checksum length handling","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T14:16:35.363Z","modified":"2026-11-04T21:09:13.27Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-122"],"updated_at":"2026-11-04T22:39:14.734949Z"}],"euvd":[{"id":"EUVD-2024-50580","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T14:16:35Z","modified":"2026-11-04T21:09:13Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-04T22:46:32.144626Z"}],"ghsa":[{"id":"GHSA-85h7-m8c3-v9wc","title":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper...","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T15:31:25Z","modified":"2025-11-04T00:32:21Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-122","CWE-787"],"updated_at":"2026-11-02T15:04:31.19776Z"}],"nvd":[{"id":"CVE-2024-12084","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T15:15:10.537Z","modified":"2026-11-04T21:17:34.677Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-122","CWE-787"],"updated_at":"2026-11-04T23:43:37.864413Z"}],"osv":[{"id":"ALPINE-CVE-2024-12084","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T15:15:10.537Z","modified":"2026-11-02T11:17:50.054245807Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:27:49.709457Z"},{"id":"BELL-CVE-2024-12084","status":"published","published":"2025-01-15T05:56:57.782234Z","modified":"2026-01-26T09:42:48.97604Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:28:19.288949Z"},{"id":"CVE-2024-12084","title":"Rsync: heap buffer overflow in rsync due to improper checksum length handling","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T14:16:35.363Z","modified":"2026-11-05T21:15:38.562689747Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-122"],"updated_at":"2026-11-05T22:01:21.792402Z"},{"id":"CVE-2024-12085","title":"Rsync: info leak via uninitialized stack contents","description":"A flaw was found in rsync which could be triggered when rsync compares file checksums. This flaw allows an attacker to manipulate the checksum length (s2length) to cause a comparison between a checksum and uninitialized memory and leak one byte of uninitialized stack data at a time.","status":"published","published":"2025-01-14T17:37:16.036Z","modified":"2026-11-11T02:30:39.979603163Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-908"],"updated_at":"2026-11-11T11:06:27.455443Z"},{"id":"CVE-2024-12086","title":"Rsync: rsync server leaks arbitrary client files","description":"A flaw was found in rsync. It could allow a server to enumerate the contents of an arbitrary file from the client's machine. This issue occurs when files are being copied from a client to a server. During this process, the rsync server will send checksums of local data to the client to compare with in order to determine what data needs to be sent to the server. By sending specially constructed checksum values for arbitrary files, an attacker may be able to reconstruct the data of those files byte-by-byte based on the responses from the client.","status":"published","published":"2025-01-14T17:37:54.96Z","modified":"2026-11-07T02:30:38.971997729Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-390"],"updated_at":"2026-11-07T03:07:52.191907Z"},{"id":"CVE-2024-12087","title":"Rsync: path traversal vulnerability in rsync","description":"A path traversal vulnerability exists in rsync. It stems from behavior enabled by the `--inc-recursive` option, a default-enabled option for many client options and can be enabled by the server even if not explicitly enabled by the client. When using the `--inc-recursive` option, a lack of proper symlink verification coupled with deduplication checks occurring on a per-file-list basis could allow a server to write files outside of the client's intended destination directory. A malicious server could write malicious files to arbitrary locations named after valid directories/paths on the client.","status":"published","published":"2025-01-14T17:57:33.927Z","modified":"2026-11-04T02:30:28.908242204Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-04T02:55:01.518827Z"},{"id":"CVE-2024-12088","title":"Rsync: --safe-links option bypass leads to path traversal","description":"A flaw was found in rsync. When using the `--safe-links` option, the rsync client fails to properly verify if a symbolic link destination sent from the server contains another symbolic link within it. This results in a path traversal vulnerability, which may lead to arbitrary file write outside the desired directory.","status":"published","published":"2025-01-14T17:38:34.89Z","modified":"2026-11-07T02:30:43.265535807Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-22"],"updated_at":"2026-11-07T03:07:52.191907Z"},{"id":"DEBIAN-CVE-2024-12084","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. 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It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.\r\n\r\nSecurity Fix(es):\r\n\r\n(CVE-2024-12084)\r\n\r\n(CVE-2024-12085)\r\n\r\n(CVE-2024-12086)\r\n\r\n(CVE-2024-12087)\r\n\r\n(CVE-2024-12088)\r\n\r\n(CVE-2024-12747)","status":"published","published":"2025-01-17T11:08:09Z","modified":"2026-08-18T01:17:42.88623039Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"OESA-2025-1064","title":"rsync security update","description":"Rsync is an open source utility that provides fast incremental file transfer. It uses the \u0026quot;rsync algorithm\u0026quot; which provides a very fast method for bringing remote files into sync. It does this by sending just the differences in the files across the link, without requiring that both sets of files are present at one of the ends of the link beforehand.\r\n\r\nSecurity Fix(es):\r\n\r\n(CVE-2024-12084)\r\n\r\n(CVE-2024-12085)\r\n\r\n(CVE-2024-12086)\r\n\r\n(CVE-2024-12087)\r\n\r\n(CVE-2024-12088)\r\n\r\n(CVE-2024-12747)","status":"published","published":"2025-01-17T11:08:09Z","modified":"2026-08-18T01:17:42.836740202Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:42.253598Z"},{"id":"RHBA-2025:6470","title":"Red Hat Bug Fix Advisory: rsync bug fix and enhancement update","status":"published","published":"2025-07-08T10:03:37Z","modified":"2026-10-14T10:05:55Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:52:58.636919Z"},{"id":"UBUNTU-CVE-2024-12084","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-09T00:00:00Z","modified":"2026-02-04T04:30:46.03359Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:54:41.555387Z"},{"id":"AZL-55646","title":"CVE-2024-12084 affecting package rsync for versions less than 3.4.1-1","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T15:15:10Z","modified":"2026-04-21T04:35:57.239829Z","updated_at":"2026-11-02T15:28:06.879785Z"},{"id":"AZL-55691","title":"CVE-2024-12084 affecting package rsync for versions less than 3.4.1-1","description":"A heap-based buffer overflow flaw was found in the rsync daemon. This issue is due to improper handling of attacker-controlled checksum lengths (s2length) in the code. When MAX_DIGEST_LEN exceeds the fixed SUM_LENGTH (16 bytes), an attacker can write out of bounds in the sum2 buffer.","status":"published","published":"2025-01-15T15:15:10Z","modified":"2026-04-21T04:54:24.535204Z","updated_at":"2026-11-02T15:28:06.879785Z"},{"id":"DSA-5843-1","title":"rsync - security update","status":"published","published":"2025-01-14T00:00:00Z","modified":"2026-03-09T02:09:48.977956Z","updated_at":"2026-11-02T15:46:17.892347Z"},{"id":"MGASA-2025-0019","title":"Updated rsync packages fix security vulnerabilities","description":"Heap buffer overflow in rsync due to improper checksum length handling.\n(CVE-2024-12084)\nInfo leak via uninitialized stack contents. (CVE-2024-12085)\nRsync server leaks arbitrary client files. (CVE-2024-12086)\nPath traversal vulnerability in rsync. (CVE-2024-12087)\nRsync --safe-links option bypass leads to path traversal.\n(CVE-2024-12088)\nRace condition in rsync handling symbolic links. (CVE-2024-12747)\n","status":"published","published":"2025-01-22T03:19:16Z","modified":"2026-04-16T04:40:55.151740976Z","updated_at":"2026-11-02T15:49:42.684501Z"},{"id":"openSUSE-SU-2025:14665-1","title":"rsync-3.4.1-1.1 on GA media","description":"These are all security issues fixed in the rsync-3.4.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-01-18T00:00:00Z","modified":"2026-02-04T02:52:31.427536Z","updated_at":"2026-11-02T16:58:36.976155Z"},{"id":"SUSE-SU-2025:0156-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues:\n\n- CVE-2024-12084: heap buffer overflow in checksum parsing. (bsc#1234100)\n- CVE-2024-12085: leak of uninitialized stack data on the server leading to possible ASLR bypass. (bsc#1234101)\n- CVE-2024-12086: leak of a client machine's file contents through the processing of checksum data. (bsc#1234102)\n- CVE-2024-12087: arbitrary file overwrite possible on clients when symlink syncing is enabled. (bsc#1234103)\n- CVE-2024-12088: bypass of the --safe-links flag may allow the placement of unsafe symlinks in a client. (bsc#1234104)\n- CVE-2024-12747: race condition in rsync handling symbolic links (bsc#1235475)\n","status":"published","published":"2025-01-17T11:59:08Z","modified":"2026-02-04T03:03:32.541234Z","updated_at":"2026-11-02T15:53:56.123059Z"},{"id":"SUSE-SU-2025:20122-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues:\n\n- CVE-2024-12084: Fixed Heap Buffer Overflow in Checksum Parsing (bsc#1234100).\n- CVE-2024-12085: Fixed Info Leak via uninitialized Stack contents defeating ASLR (bsc#1234101).\n- CVE-2024-12086: Fixed server leaking arbitrary client files (bsc#1234102).\n- CVE-2024-12087: Fixed server use of symbolic links to  make client write files outside of destination directory (bsc#1234103).\n- CVE-2024-12088: Fixed --safe-links bypass (bsc#1234104).\n- CVE-2024-12747: Fixed Race Condition in rsync Handling Symbolic Links (bsc#1235475).\n","status":"published","published":"2025-02-04T08:59:54Z","modified":"2026-03-23T04:50:03.558329Z","updated_at":"2026-11-02T15:53:59.381172Z"},{"id":"SUSE-SU-2025:20223-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues:\n\n- Bump protocol version to 32 - make it easier to show server is patched. \n\n- Fix FLAG_GOT_DIR_FLIST collission with FLAG_HLINKED\n\n- Security update,CVE-2024-12747, bsc#1235475 race condition in handling symbolic links\n \n- Security update, fix multiple vulnerabilities:\n  * CVE-2024-12084, bsc#1234100 - Heap Buffer Overflow in Checksum Parsing\n  * CVE-2024-12085, bsc#1234101 - Info Leak via uninitialized Stack contents defeats ASLR\n  * CVE-2024-12086, bsc#1234102 - Server leaks arbitrary client files\n  * CVE-2024-12087, bsc#1234103 - Server can make client write files outside of destination directory using symbolic links\n  * CVE-2024-12088, bsc#1234104 - --safe-links Bypass\n","status":"published","published":"2025-02-07T09:56:49Z","modified":"2026-03-23T04:48:12.144871Z","updated_at":"2026-11-02T15:53:59.381172Z"},{"id":"SUSE-SU-2026:2038-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues\n\n    \n- CVE-2026-29518: Symlink-Race TOCTOU in Daemon (bsc#1264511).\n- CVE-2026-41035: Count of entries mismatch can lead to a use-after-free (bsc#1262223)\n- CVE-2026-43617: Authorization Bypass via Hostname Resolution (bsc#1264515).\n- CVE-2026-43618: Integer Overflow Information Disclosure (bsc#1264512).\n- CVE-2026-43619: Symlink Race Condition via Path-Based Syscalls (bsc#1264514).\n- CVE-2026-43620: Out-of-Bounds Array Read via recv_files() (bsc#1264513).\n- CVE-2026-45232: Off-by-one stack OOB write in HTTP CONNECT proxy response parsing (bsc#1265296).\n","status":"published","published":"2026-05-21T13:33:41Z","modified":"2026-05-22T09:00:05.164069318Z","updated_at":"2026-11-02T15:54:01.953589Z"},{"id":"SUSE-SU-2026:2048-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues\n\n- CVE-2026-29518: Symlink-Race TOCTOU in Daemon (bsc#1264511).\n- CVE-2026-43617: Authorization Bypass via Hostname Resolution (bsc#1264515).\n- CVE-2026-43618: Integer Overflow Information Disclosure (bsc#1264512).\n- CVE-2026-43620: Out-of-Bounds Array Read via recv_files() (bsc#1264513).\n- CVE-2026-45232: Off-by-one stack OOB write in HTTP CONNECT proxy response parsing (bsc#1265296).\n","status":"published","published":"2026-05-25T13:55:42Z","modified":"2026-05-26T08:15:05.350251039Z","updated_at":"2026-11-02T15:54:01.953589Z"},{"id":"SUSE-SU-2026:2083-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues\n\n- CVE-2026-29518: Symlink-Race TOCTOU in Daemon (bsc#1264511).\n- CVE-2026-41035: count of entries mismatch can lead to a use-after-free (bsc#1262223).\n- CVE-2026-43617: Authorization Bypass via Hostname Resolution (bsc#1264515).\n- CVE-2026-43618: Integer Overflow Information Disclosure (bsc#1264512).\n- CVE-2026-43620: Out-of-Bounds Array Read via recv_files() (bsc#1264513).\n- CVE-2026-45232: Off-by-one stack OOB write in HTTP CONNECT proxy response parsing (bsc#1265296).\n","status":"published","published":"2026-05-27T07:56:11Z","modified":"2026-05-28T08:15:05.799079873Z","updated_at":"2026-11-02T15:54:01.953589Z"},{"id":"SUSE-SU-2026:21726-1","title":"Security update for rsync","description":"This update for rsync fixes the following issues\n\nSecurity issues:\n\n- CVE-2026-29518: Symlink-Race TOCTOU in Daemon (bsc#1264511).\n- CVE-2026-43617: Authorization Bypass via Hostname Resolution (bsc#1264515).\n- CVE-2026-43618: Integer Overflow Information Disclosure (bsc#1264512).\n- CVE-2026-43619: Symlink Race Condition via Path-Based Syscalls (bsc#1264514).\n- CVE-2026-43620: Out-of-Bounds Array Read via recv_files() (bsc#1264513).\n- CVE-2026-45232: Off-by-one stack OOB write in HTTP CONNECT proxy response parsing (bsc#1265296).\n\nNon security issues:\n\n- rsync --delay-updates never updates after interruption (bsc#1204538).\n- Fix duplication of flag causing illegal hashkey failures.\n","status":"published","published":"2026-05-21T11:04:19Z","modified":"2026-05-23T18:23:40.42363199Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"USN-7206-1","title":"Several security issues were fixed in rsync","description":"Simon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync\ndid not properly handle checksum lengths. An attacker could use this\nissue to execute arbitrary code. (CVE-2024-12084)\n\nSimon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync\ncompared checksums with uninitialized memory. An attacker could exploit\nthis issue to leak sensitive information. (CVE-2024-12085)\n\nSimon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync\nincorrectly handled file checksums. A malicious server could use this\nto expose arbitrary client files. (CVE-2024-12086)\n\nSimon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync\nmishandled symlinks for some settings. An attacker could exploit this\nto write files outside the intended directory. (CVE-2024-12087)\n\nSimon Scannell, Pedro Gallegos, and Jasiel Spelman discovered that rsync\nfailed to verify symbolic link destinations for some settings. An\nattacker could exploit this for path traversal attacks. (CVE-2024-12088)\n\nAleksei Gorban discovered a race condition in rsync's handling of\nsymbolic links. An attacker could use this to access sensitive\ninformation or escalate privileges. (CVE-2024-12747)\n","status":"published","published":"2025-01-14T23:32:20Z","modified":"2026-06-25T13:32:30.086799112Z","updated_at":"2026-11-02T16:58:18.876384Z"}]}}