CVE-2023-3603

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Summary

CVECVE-2023-3603
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-07-21 20:15:00 UTC
Updated2023-11-07 04:19:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-770

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Libssh Libssh - All All All

References

ReferenceSourceLinkTags
2221791 – (CVE-2023-3603) CVE-2023-3603 libssh: Processing SFTP server read may cause NULL dereference MISC bugzilla.redhat.com
cve-details MISC access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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