An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspecified attack methodology that can easily trigger a large amount of memory consumption.
[
{
"events": [
{
"introduced": "2.0"
},
{
"fixed": "4.15"
}
]
},
{
"events": [
{
"introduced": "5.0"
},
{
"fixed": "5.0.6"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "9.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "10.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"last_affected": "34"
}
]
}
]
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-28651.json"