A missing allocation check in sftp server processing read requests may cause a NULL dereference on low-memory conditions. The malicious client can request up to 4GB SFTP reads, causing allocation of up to 4GB buffers, which was not being checked for failure. This will likely crash the authenticated user's sftp server connection (if implemented as forking as recommended). For thread-based servers, this might also cause DoS for legitimate users.
Given this code is not in any released versions, no security releases have been issued.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2023-07-21T19:09:44.083Z
Updated: 2024-08-02T07:01:56.718Z
Reserved: 2023-07-10T18:21:21.431Z
Link: CVE-2023-3603
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2023-07-21T20:15:16.587
Modified: 2024-05-23T17:56:49.850
Link: CVE-2023-3603
Redhat