HighFix available
bluez — security advisory
BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device. The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20938.
- Products
- bluez
- Affected versions
- 5.35-0ubuntu2, 5.36-0ubuntu1, 5.37-0ubuntu5, 5.37-0ubuntu5.1, 5.37-0ubuntu5.3, 5.37-0ubuntu5.3+esm1, 5.37-0ubuntu5.3+esm2, 5.37-0ubuntu5.3+esm3, 5.37-0ubuntu5.3+esm4, 5.37-0ubuntu5.3+esm5, 5.37-0ubuntu5.3+esm6, 5.46-0ubuntu3, 5.46-0ubuntu4, 5.48-0ubuntu3, 5.48-0ubuntu3.1, 5.48-0ubuntu3.2, 5.48-0ubuntu3.3, 5.48-0ubuntu3.4, 5.48-0ubuntu3.5, 5.48-0ubuntu3.6, 5.48-0ubuntu3.7, 5.48-0ubuntu3.8, 5.48-0ubuntu3.9, 5.48-0ubuntu3.9+esm1, 5.48-0ubuntu3.9+esm2, 5.48-0ubuntu3.9+esm3, 5.50-0ubuntu4, 5.51-0ubuntu1, 5.51-0ubuntu2, 5.52-0ubuntu1, 5.52-0ubuntu2, 5.53-0ubuntu1, 5.53-0ubuntu2, 5.53-0ubuntu3, 5.53-0ubuntu3.1, 5.53-0ubuntu3.2, 5.53-0ubuntu3.3, 5.53-0ubuntu3.4, 5.53-0ubuntu3.5, 5.53-0ubuntu3.6, 5.53-0ubuntu3.7, 5.53-0ubuntu3.8, 5.60-0ubuntu2, 5.62-0ubuntu1, 5.62-0ubuntu2, 5.63-0ubuntu1, 5.63-0ubuntu2, 5.64-0ubuntu1, 5.64-0ubuntu1.1, 5.64-0ubuntu1.3
- Fixed versions
- 5.53-0ubuntu3.9, 5.64-0ubuntu1.4
- CVEs
- CVE-2023-50230
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 10:37 UTC · Revision 1
Source evidence
BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device. The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20938.
osv:UBUNTU-CVE-2023-50230
bluez
Fixed versions: Not specified
bluez
Fixed versions: Not specified
bluez
Fixed versions: 5.53-0ubuntu3.9
bluez
Fixed versions: 5.64-0ubuntu1.4
Complete source record
{
"id": "708b21ea12ca20021fb3e4a5cffbdf5cb4536205a0179b5569a3dcce562167f0",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-50230",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2023-50230",
"summary": "BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device. The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20938.",
"evidence": "osv:UBUNTU-CVE-2023-50230",
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{
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{
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{
"value": "5.52-0ubuntu1",
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{
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{
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{
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{
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{
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{
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{
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{
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],
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{
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{
"value": "5.62-0ubuntu1",
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},
{
"value": "5.62-0ubuntu2",
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},
{
"value": "5.63-0ubuntu1",
"evidence": "/affected/3/versions"
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{
"value": "5.63-0ubuntu2",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1.1",
"evidence": "/affected/3/versions"
},
{
"value": "5.64-0ubuntu1.3",
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"severity": "high",
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"aliases": [
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"metrics": [
{
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{
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"5.37-0ubuntu5.3+esm3",
"5.37-0ubuntu5.3+esm4",
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},
{
"binary_name": "bluez-cups",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.37-0ubuntu5.3+esm6"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.37-0ubuntu5.3+esm6"
}
]
}
},
{
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],
"package": {
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"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
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"5.46-0ubuntu4",
"5.48-0ubuntu3",
"5.48-0ubuntu3.1",
"5.48-0ubuntu3.2",
"5.48-0ubuntu3.3",
"5.48-0ubuntu3.4",
"5.48-0ubuntu3.5",
"5.48-0ubuntu3.6",
"5.48-0ubuntu3.7",
"5.48-0ubuntu3.8",
"5.48-0ubuntu3.9",
"5.48-0ubuntu3.9+esm1",
"5.48-0ubuntu3.9+esm2",
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"database_specific": {
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"ecosystem_specific": {
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{
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{
"binary_name": "bluez-cups",
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{
"binary_name": "bluez-hcidump",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.48-0ubuntu3.9+esm3"
},
{
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{
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"package": {
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"5.53-0ubuntu3.2",
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"5.53-0ubuntu3.4",
"5.53-0ubuntu3.5",
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"5.53-0ubuntu3.8"
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},
"ecosystem_specific": {
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{
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{
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},
{
"binary_name": "bluez-cups",
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},
{
"binary_name": "bluez-hcidump",
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{
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},
{
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"package": {
"name": "bluez",
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],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.64-0ubuntu1.4"
},
{
"binary_name": "bluez",
"binary_version": "5.64-0ubuntu1.4"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.64-0ubuntu1.4"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.64-0ubuntu1.4"
},
{
"binary_name": "bluez-meshd",
"binary_version": "5.64-0ubuntu1.4"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.64-0ubuntu1.4"
},
{
"binary_name": "bluez-tests",
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},
{
"binary_name": "libbluetooth3",
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}
],
"availability": "No subscription required"
}
}
],
"modified": "2026-10-09T01:45:17.180787559Z",
"provider": "osv",
"upstream": [
"CVE-2023-50230"
],
"references": [
"https://ubuntu.com/security/CVE-2023-50230",
"https://www.cve.org/CVERecord?id=CVE-2023-50230",
"https://www.zerodayinitiative.com/advisories/ZDI-23-1812/",
"https://ubuntu.com/security/notices/USN-7222-1"
]
},
"related_cves": [
{
"value": "CVE-2023-50230",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 108233,
"published_at": "2024-05-03T03:16:00+00:00"
}