CVE-2024-47866
RGW DoS attack with empty HTTP header in S3 object copy
7.5CVSSHIGH
Description
Ceph is a distributed object, block, and file storage platform. In versions up to and including 19.2.3, using the argument `x-amz-copy-source` to put an object and specifying an empty string as its content leads to the RGW daemon crashing, resulting in a DoS attack. As of time of publication, no known patched versions exist.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:NConfidentialityNone
I:NIntegrityNone
A:HAvailabilityHigh
Weaknesses
Affected Products
and 3 more affected products View all →
Attack Graph
Products CVE Techniques Tactics
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Exploitability
Official Patch Available
MITRE ATT&CK
1 technique Initial Access
References
https://github.com/ceph/ceph/security/advisories/GHSA-mgrm-g92q-f8h8
github.com
http://www.openwall.com/lists/oss-security/2025/11/11/3
openwall.com
https://redos.red-soft.ru/support/secure/
redos.red-soft.ru
and 6 more references View all →
Timeline
Published
Nov 12, 2025
Last Updated
Dec 31, 2025
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