An issue was discovered in OpenStack Keystone before 15.0.1, and 16.0.0. The EC2 API doesn't have a signature TTL check for AWS Signature V4. An attacker can sniff the Authorization header, and then use it to reissue an OpenStack token an unlimited number of times.
{
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
}
],
"source": "CPE_STRING"
}
]
}{
"cpe": [
"cpe:2.3:a:openstack:keystone:*:*:*:*:*:*:*:*",
"cpe:2.3:a:openstack:keystone:16.0.0:*:*:*:*:*:*:*"
],
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "15.0.1"
},
{
"introduced": "16.0.0"
},
{
"last_affected": "16.0.0"
}
],
"source": [
"CPE_RANGE",
"CPE_STRING"
]
}