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.
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History
Thu, 26 Sep 2024 20:30:00 +0000
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MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2023-07-21T19:09:44.083Z
Updated: 2024-09-26T20:04:43.251Z
Reserved: 2023-07-10T18:21:21.431Z
Link: CVE-2023-3603
Vulnrichment
Updated: 2024-08-02T07:01:56.718Z
NVD
Status : Modified
Published: 2023-07-21T20:15:16.587
Modified: 2024-11-21T08:17:38.737
Link: CVE-2023-3603
Redhat