Critical
Rsync: heap buffer overflow in rsync due to improper checksum length handling
Type: advisorySources: OSV
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2024-12084, CVE-2024-12085, CVE-2024-12086, CVE-2024-12087, CVE-2024-12088
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 14:14 UTC · Revision 1
Source evidence
Rsync: heap buffer overflow in rsync due to improper checksum length handling
core-osv · Original sourcePublished 15 Jan 2025, 14:16 UTC
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.
osv:CVE-2024-12084
Complete source record
{
"id": "04bc20f5682c690ff6503eee94701d72f10d3020222bfd421b582bca45a19c60",
"url": "https://osv.dev/vulnerability/CVE-2024-12084",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Rsync: heap buffer overflow in rsync due to improper checksum length handling",
"summary": "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.",
"evidence": "osv:CVE-2024-12084",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2024-12084",
"aliases": [
"CVE-2024-12084",
"CVE-2024-12085",
"CVE-2024-12086",
"CVE-2024-12087",
"CVE-2024-12088",
"GHSA-p5pg-x43v-mvqj"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://git.samba.org/rsync.git/",
"type": "GIT",
"events": [
{
"introduced": "6b5ae825db985e9d1c98576651b50c8e490ddb97"
},
{
"last_affected": "6c8ca91c731b7bf2b081694bda85b7dadc2b7aff"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:samba:rsync:3.2.7:-:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.7-NA"
},
{
"last_affected": "3.2.7-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:rsync:3.3.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "3.3.0-NA"
},
{
"last_affected": "3.3.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
},
{
"repo": "https://github.com/rsyncproject/rsync",
"type": "GIT",
"events": [
{
"introduced": "6b5ae825db985e9d1c98576651b50c8e490ddb97"
},
{
"last_affected": "6c8ca91c731b7bf2b081694bda85b7dadc2b7aff"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "3.2.7"
},
{
"last_affected": "3.2.7"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"range": [
{
"introduced": "3.3.0"
},
{
"last_affected": "3.3.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandaloneSingleVersion"
},
{
"cpe": "cpe:2.3:a:samba:rsync:3.2.7:-:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.7-NA"
},
{
"last_affected": "3.2.7-NA"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:samba:rsync:3.3.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "3.3.0-NA"
},
{
"last_affected": "3.3.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.2.7",
"3.2.7-NA",
"3.3.0",
"3.3.0-NA",
"v3.2.7",
"v3.3.0",
"v3.3.0pre1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-12084.json"
}
}
],
"modified": "2026-10-28T02:30:36.126695656Z",
"provider": "osv",
"references": [
"https://access.redhat.com/downloads/content/package-browser/",
"https://kb.cert.org/vuls/id/952657",
"https://www.kb.cert.org/vuls/id/952657",
"https://access.redhat.com/errata/RHBA-2025:6470",
"https://access.redhat.com/security/cve/CVE-2024-12084",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/12xxx/CVE-2024-12084.json",
"https://nvd.nist.gov/vuln/detail/CVE-2024-12084",
"https://security.netapp.com/advisory/ntap-20250131-0002/",
"https://bugzilla.redhat.com/show_bug.cgi?id=2330527",
"https://github.com/RsyncProject/rsync",
"https://github.com/google/security-research/security/advisories/GHSA-p5pg-x43v-mvqj"
],
"provider_metadata": {
"cwe_ids": [
"CWE-122"
],
"cna_assigner": "redhat",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "0:3.4.1-2.el10"
}
],
"source": "AFFECTED_FIELD",
"strategy": "InverseAffectedRanges"
}
]
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/12xxx/CVE-2024-12084.json"
}
},
"related_cves": [
{
"value": "CVE-2024-12084",
"evidence": "/id"
},
{
"value": "CVE-2024-12085",
"evidence": "/aliases"
},
{
"value": "CVE-2024-12086",
"evidence": "/aliases"
},
{
"value": "CVE-2024-12087",
"evidence": "/aliases"
},
{
"value": "CVE-2024-12088",
"evidence": "/aliases"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 503520,
"published_at": "2025-01-15T14:16:35.363+00:00"
}