Description (CNA)
In OpenStack Swift before 2.36.2 and 2.37.2, s3api middleware enters an infinite loop when processing a truncated aws-chunked PUT request body. The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| OpenStack / Swift | affected 2.36.0 before 2.36.2; affected 2.37.0 before 2.37.2; affected 2.35.1 before 2.35.3 |
CWE
CWE-835
References
- https://bugs.launchpad.net/bugs/2152205
- https://review.opendev.org/c/openstack/swift/+/987957
- https://review.opendev.org/c/openstack/swift/+/988093
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.