Astra Linux – Vulnerability found in Linux 5.15, Linux 6.1

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The UAF issue in ksmbdtcpnewconnection has been fixed. The race that occurs is between the process of handling a new TCP connection and its disconnection. This causes a UAF error in the struct tcptransport structure within...

Astra Linux – Vulnerability in Samba

A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions, when the Samba VFS module “aclxattr” is configured with “aclxattr:ignore system acls = yes”. The SMB protocol allows opening files when the client requests read-only...

Astra Linux – Vulnerability in Samba

Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability...

Astra Linux – Vulnerability in Samba

Samba does not validate the Validated-DNS-Host-Name property for the dNSHostName attribute, which may allow unprivileged users to set this value...

Astra Linux – Vulnerability in Samba

A flaw was discovered in the Samba AD LDAP server. The AD DC database audit logging module can access values of LDAP messages freed by a preceding database module, leading to a use-after-free issue. This issue only occurs when certain privileged attributes are modified, such as userAccountControl...

Astra Linux – Vulnerability in Samba

A flaw was discovered 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, allowing for full domain takeover...

Astra Linux – Vulnerability in Samba

A flaw was discovered in the way samba handled file and directory permissions. A authenticated user could exploit this flaw to gain access to certain file and directory information that would otherwise be unavailable to the attacker...

Astra Linux – Vulnerability in Heimdal, Samba

A heap-based buffer overflow vulnerability was discovered in Samba, specifically within the GSSAPI unwrapdes and unwrapdes3 routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow for a length-limited write buffer overflow on memory allocated by malloc,...

Astra Linux – Vulnerability in Samba

A flaw was discovered in the way Samba maps domain users to local users. An authenticated attacker could exploit this flaw to cause potential privilege escalation...

Astra Linux – Vulnerability in Samba, Heimdal

A null pointer de-reference was detected in the way the Samba Kerberos server handled the absence of the sname in the TGS-REQ Ticket Granting Server – Request. A authenticated user could exploit this flaw to crash the Samba server...

Astra Linux – Vulnerability in Samba

In Samba, GnuTLS’ gnutlsrnd function may fail, resulting in predictable random values...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ksmbd: The reference count leak in smbcheckpermdacl has been fixed. The issue occurs in a specific part of smbcheckpermdacl. When “id” and “uid” have the same value, the function simply jumps out of the loop without decrementing...

Astra Linux – Vulnerability in Samba

A out-of-bounds read vulnerability was discovered in Samba due to insufficient length checks in the winbinddpamauthcrap.c file. When performing NTLM authentication, the client sends cryptographic challenges back to the server. These responses have varying lengths, and Winbind fails to check the...

Astra Linux – Vulnerability in Samba

An infinite loop vulnerability was discovered in Samba’s mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function slunpackloop failed to validate a field in the network packet that contains the count of elements in an array-li...

Astra Linux – Vulnerability in Linux 5.10

In the Linux kernel, the following vulnerability has been resolved: ksmbd: It is required that 3 sub-authorities are present before reading subauth2. parsedacl compares each ACE SID against sidunixNFSmode. When a match is found, it reads sid.subauth2 as the file mode. If sidunixNFSmode represents...

Astra Linux – Vulnerability found in Linux 5.10, Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: ksmbd: A possible reference count leak in smb2open has been fixed. The reference count of ACLs will cause a leak when memory allocation fails. This issue has been addressed by adding the missing posixaclrelease function...

Astra Linux – Vulnerability in Samba

A design flaw was identified in Samba’s DirSync control implementation, which exposes passwords and secrets in Active Directory to privileged users and Read-Only Domain Controllers RODCs. This flaw allows RODCs and users with the GETCHANGES permission to access all attributes, including sensitive...

Astra Linux – Vulnerability in cifs-utils

It was discovered that cifs-utils’ mount.cifs function invoked a shell when requesting the Samba password, which could be exploited to inject arbitrary commands. An attacker who had special permissions, such as those through sudo rules, could use this vulnerability to escalate their privileges...

Astra Linux – Vulnerability in Samba

A null pointer dereference flaw was detected in Samba’s Winbind service in versions prior to 4.11.15, before 4.12.9, and before 4.13.1. A local user could exploit this flaw to crash the Winbind service, resulting in a denial of service...

Astra Linux – Vulnerability in Samba

Multiple flaws were identified in the way Samba AD DC implemented access control and compliance checks for stored data. An attacker could exploit these flaws to cause a complete compromise of the domain...