DEBIAN-CVE-2026-45232
Rsync versions before 3.4.3 contain an off-by-one out-of-bounds stack write vulnerability in the establish_proxy_connection() function in socket.c that allows network attackers to corrupt stack memory by sending a malformed HTTP proxy response. Attackers can exploit this by positioning themselves between the client and proxy or controlling the proxy server to send a response line of 1023 or more bytes without a newline terminator, causing a null byte to be written to an out-of-bounds stack address when the RSYNC_PROXY environment variable is set.
DEBIAN-CVE-2026-45232
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-45232
rsync
Source reference: /affected/0/package/name
- Affected versions
- 3.2.7-1
Source reference:
/affected/0/versions3.2.7-1+deb12u1Source reference:
/affected/0/versions3.2.7-1+deb12u2Source reference:
/affected/0/versions3.2.7-1+deb12u3Source reference:
/affected/0/versions3.2.7-1+deb12u4Source reference:
/affected/0/versions3.2.7-1+deb12u5Source reference:
/affected/0/versions - Fixed versions
- 3.2.7-1+deb12u6
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
rsync
Source reference: /affected/1/package/name
- Affected versions
- 3.4.1+ds1-5
Source reference:
/affected/1/versions3.4.1+ds1-5+deb13u1Source reference:
/affected/1/versions3.4.1+ds1-5+deb13u2Source reference:
/affected/1/versions3.4.1+ds1-5+deb13u3Source reference:
/affected/1/versions - Fixed versions
- 3.4.1+ds1-5+deb13u4
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
rsync
Source reference: /affected/2/package/name
- Affected versions
- 3.4.1+ds1-5
Source reference:
/affected/2/versions3.4.1+ds1-6Source reference:
/affected/2/versions3.4.1+ds1-7Source reference:
/affected/2/versions3.4.1+ds1-8~exp1Source reference:
/affected/2/versions3.4.2+ds1-1Source reference:
/affected/2/versions3.4.2+ds1-2Source reference:
/affected/2/versions - Fixed versions
- 3.4.3+ds1-1
Source reference:
/affected/2/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.7-1+deb12u6"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/debian/rsync?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"versions": [
"3.2.7-1",
"3.2.7-1+deb12u1",
"3.2.7-1+deb12u2",
"3.2.7-1+deb12u3",
"3.2.7-1+deb12u4",
"3.2.7-1+deb12u5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45232.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.1+ds1-5+deb13u4"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/debian/rsync?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"3.4.1+ds1-5",
"3.4.1+ds1-5+deb13u1",
"3.4.1+ds1-5+deb13u2",
"3.4.1+ds1-5+deb13u3"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45232.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.3+ds1-1"
}
]
}
],
"package": {
"name": "rsync",
"purl": "pkg:deb/debian/rsync?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"3.4.1+ds1-5",
"3.4.1+ds1-6",
"3.4.1+ds1-7",
"3.4.1+ds1-8~exp1",
"3.4.2+ds1-1",
"3.4.2+ds1-2"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-45232.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56526 · Revision 1
- Added to Heist Feed
- Publisher date