It was discovered that the Ceph Object Gateway (RGW) SigV4 handler did not reject requests carrying x-amz- headers that were absent from the signed header set. An attacker holding a presigned URL could possibly use this issue to attach arbitrary unsigned x-amz- headers that RGW would honor, allowing them to escalate their privileges beyond what the URL's signer intended.
It was discovered that the Ceph Object Gateway (RGW) SigV4 handler did not reject requests carrying x-amz- headers that were absent from the signed header set. An attacker holding a presigned URL could possibly use this issue to attach arbitrary unsigned x-amz- headers that RGW would honor, allowing them to escalate their privileges beyond what the URL's signer intended.
It was discovered that the Ceph Object Gateway (RGW) SigV4 handler did not reject requests carrying x-amz- headers that were absent from the signed header set. An attacker holding a presigned URL could possibly use this issue to attach arbitrary unsigned x-amz- headers that RGW would honor, allowing them to escalate their privileges beyond what the URL's signer intended.
It was discovered that the Ceph Object Gateway (RGW) SigV4 handler did not reject requests carrying x-amz- headers that were absent from the signed header set. An attacker holding a presigned URL could possibly use this issue to attach arbitrary unsigned x-amz- headers that RGW would honor, allowing them to escalate their privileges beyond what the URL's signer intended.
In general, a standard system update will make all the necessary changes.
The problem can be corrected by updating your system to the following package versions:
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The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
