11558 matches found
All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.
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A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server which also serves protocols other than dnsserver will be restarted after a short delay but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate but many RPC services will not.
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Since the Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability was disclosed by Microsoft on Nov 8 2022 and per RFC8429 it is assumed that rc4-hmac is weak Vulnerable Samba Active Directory DCs will issue rc4-hmac encrypted tickets despite the target server supporting better encryption (eg aes256-cts-hmac-sha1-96).
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The Samba AD DC administration tool when operating against a remote LDAP server will by default send new or reset passwords over a signed-only connection.
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A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met.
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A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata to perform this operation outside of the share.
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A flaw was found in Samba. Samba AD users can cause the server to access uninitialized data with an LDAP add or modify the request usually resulting in a segmentation fault.
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A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes such as userAccountControl.
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A flaw was found in Samba. The KDC accepts kpasswd requests encrypted with any key known to it. By encrypting forged kpasswd requests with its own key a user can change other users' passwords enabling full domain takeover.
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A flaw was found in the way samba as an Active Directory Domain Controller is able to support an RODC (read-only domain controller). This would allow an RODC to print administrator tickets.
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A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.
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Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.
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All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled or the share also available via NFS in order for this attack to succeed.
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A flaw was found in Samba. An incomplete access check on dnsHostName allows authenticated but otherwise unprivileged users to delete this attribute from any object in the directory.
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A flaw was found in Samba. Some SMB1 write requests were not correctly range-checked to ensure the client had sent enough data to fulfill the write allowing server memory contents to be written into the file (or printer) instead of client-supplied data. The client cannot control the area of the server memory written to the file (or printer).
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A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys allowing them to decrypt each other's tickets. A user who has been requested to change their password can exploit this flaw to obtain and use tickets to other services.
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A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request and chose to fragment it an attacker could replace later fragments with their own data bypassing the signature requirements.
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A flaw was found in the way Samba as an Active Directory Domain Controller implemented Kerberos name-based authentication. The Samba AD DC could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
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A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
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