CVE-2023-3603

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Source
https://cve.org/CVERecord?id=CVE-2023-3603
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3603.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-3603
Downstream
Related
Published
2023-07-21T19:09:44Z
Modified
2026-08-12T03:51:46Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
Summary
Processing sftp server read may cause null dereference
Details

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.

Database specific 
{
    "cna_assigner": "redhat",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3603.json"
}
References

Affected packages

Git / gitlab.com/libssh/libssh-mirror

Affected ranges

Type
GIT
Repo
https://gitlab.com/libssh/libssh-mirror
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
04685a74df9ce1db1bc116a83a0da78b4f4fa1f8
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.8.9"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

libssh-0.*
libssh-0.8.0
libssh-0.8.1
libssh-0.8.2
libssh-0.8.3
libssh-0.8.4
libssh-0.8.5
libssh-0.8.6
libssh-0.8.7
libssh-0.8.8
Other
release-0-3-0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3603.json"