An infinite loop vulnerability was found in Samba's mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.
{
"cna_assigner": "redhat",
"cwe_ids": [
"CWE-835"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34966.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"range": [
{
"fixed": "0:4.18.6-1.el8"
},
{
"fixed": "0:4.18.6-1.el8"
},
{
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},
{
"fixed": "0:4.17.5-5.el8_8"
},
{
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{
"fixed": "0:4.18.6-100.el9"
},
{
"fixed": "0:4.17.5-105.el9_2"
},
{
"fixed": "0:4.15.5-15.el8_6"
}
],
"source": "AFFECTED_FIELD",
"strategy": "InverseAffectedRanges"
}
]
}
]
}{
"extracted_events": [
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "4.16.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
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},
{
"fixed": "4.17.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.18.0"
},
{
"fixed": "4.18.5"
}
],
"source": "CPE_RANGE"
}
]
}