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.
References
| Link | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-3603 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2221791 | Issue Tracking Third Party Advisory |
Configurations
History
23 May 2024, 17:56
| Type | Values Removed | Values Added |
|---|---|---|
| CPE | cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* | |
| CWE |
01 Aug 2023, 14:44
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| First Time |
Libssh
Libssh libssh |
|
| CPE | cpe:2.3:a:libssh:libssh:-:*:*:*:*:*:*:* | |
| References | (MISC) https://access.redhat.com/security/cve/CVE-2023-3603 - Third Party Advisory | |
| References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2221791 - Issue Tracking, Third Party Advisory | |
| CWE | CWE-770 |
21 Jul 2023, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2023-07-21 20:15
Updated : 2024-05-23 17:56
NVD link : CVE-2023-3603
Mitre link : CVE-2023-3603
CVE.ORG link : CVE-2023-3603
JSON object : View
Products Affected
libssh
- libssh
CWE
CWE-476
NULL Pointer Dereference