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CVE-2023-6918
Detail
Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Description
A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.
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CVE Modified by Red Hat, Inc.5/14/2024 10:37:37 AM
Action
Type
Old Value
New Value
CVE Modified by Red Hat, Inc.4/30/2024 11:15:51 AM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://access.redhat.com/errata/RHSA-2024:2504 [No types assigned]
Modified Analysis by NIST1/10/2024 11:14:07 AM
Action
Type
Old Value
New Value
Changed
CPE Configuration
AND
OR
*cpe:2.3:a:libssh:libssh:-:*:*:*:*:*:*:*
OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
OR
*cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
*cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Removed
CPE Configuration
AND
OR
*cpe:2.3:a:libssh2:libssh2:-:*:*:*:*:*:*:*
OR
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Changed
Reference Type
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/ No Types Assigned
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/ Third Party Advisory
CVE Modified by Red Hat, Inc.1/09/2024 10:15:44 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LZQVUHWVWRH73YBXUQJOD6CKHDQBU3DM/ [No types assigned]
Modified Analysis by NIST1/04/2024 3:21:35 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Removed
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Changed
Reference Type
https://www.libssh.org/security/advisories/CVE-2023-6918.txt No Types Assigned
Red Hat, Inc. https://www.libssh.org/security/advisories/CVE-2023-6918.txt [No types assigned]
Initial Analysis by NIST1/02/2024 11:00:10 AM
Action
Type
Old Value
New Value
Added
CPE Configuration
AND
OR
*cpe:2.3:a:libssh2:libssh2:-:*:*:*:*:*:*:*
OR
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
Added
CPE Configuration
AND
OR
*cpe:2.3:a:libssh:libssh:-:*:*:*:*:*:*:*
OR
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
Added
CPE Configuration
OR
*cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* versions from (including) 0.9.0 up to (excluding) 0.9.8
*cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* versions from (including) 0.10.0 up to (excluding) 0.10.6
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Added
CWE
NIST CWE-252
Changed
Reference Type
https://access.redhat.com/security/cve/CVE-2023-6918 No Types Assigned
CVE Modified by Red Hat, Inc.12/21/2023 11:15:09 PM
Action
Type
Old Value
New Value
Added
Reference
Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MKQRBF3DWMWPH36LBCOBUTSIZRTPEZXB/ [No types assigned]
New CVE Received by NIST12/18/2023 7:15:08 PM
Action
Type
Old Value
New Value
Added
CVSS V3.1
Red Hat, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Added
CWE
Red Hat, Inc. CWE-252
Added
Description
A flaw was found in the libssh implements abstract layer for message digest (MD) operations implemented by different supported crypto backends. The return values from these were not properly checked, which could cause low-memory situations failures, NULL dereferences, crashes, or usage of the uninitialized memory as an input for the KDF. In this case, non-matching keys will result in decryption/integrity failures, terminating the connection.
Added
Reference
Red Hat, Inc. https://access.redhat.com/security/cve/CVE-2023-6918 [No types assigned]
Added
Reference
Red Hat, Inc. https://bugzilla.redhat.com/show_bug.cgi?id=2254997 [No types assigned]
Added
Reference
Red Hat, Inc. https://www.libssh.org/2023/12/18/libssh-0-10-6-and-libssh-0-9-8-security-releases/ [No types assigned]
Quick Info
CVE Dictionary Entry: CVE-2023-6918 NVD
Published Date: 12/18/2023 NVD
Last Modified: 04/30/2024
Source: Red Hat, Inc.