Michael Hanselmann

Foi encontrada uma vulnerabilidade do tipo “use-after-free” na função `usbredirparser serialize()` em `usbredirparser/usbredirparser.c`. Isso ocorre ao serializar grandes quantidades de dados de gravação em buffer, particularmente em casos de destinos lentos ou bloqueados. A exploração dessa vulnerabilidade poderia permitir que um invasor acessasse dados confidenciais, comprometesse a integridade dos dados e causasse uma negação de serviço.

A flaw was found in the samba client where a malicious server can supply a pathname to the client with separators, allowing the client to access files and folders outside of the SMB network pathnames. This could enable an attacker to create files outside of the current working directory using the privileges of the client user. The issue is due to incorrect restriction of the directory path name with limited access.

The issue concerns a relative paths injection in directory entry lists within the Linux kernel CIFS implementation. It is caused by incorrect restriction of the directory path name with limited access. Exploitation of this issue may allow a remote attacker to manipulate files in the client's directory.

The issue allows a malicious client to create a directory in an area of the server file system not exported under the share definition by using an SMB1 or NFS race. This can happen if SMB1 is enabled or the share is also available via NFS. The vulnerability is related to the unix extensions of SMB1 and NFS in the Samba package, which is caused by incorrect synchronization during concurrent execution.

Name of the Vulnerable Software and Affected Versions: macOS versions prior to 10.14 Description: A denial of service issue was addressed with improved validation. Recommendations: For versions prior to 10.14, update to macOS Mojave 10.14 or later to resolve the issue.

An injection issue was addressed with improved validation.

The issue is related to an out-of-bounds read of up to 128 bytes in the `i2c ddc()` function, located in the `hw/i2c/i2c-ddc.c` file. A local attacker with permission to execute i2c commands could exploit this to read stack memory of the qemu process on the host, potentially revealing protected information.

Name of the Vulnerable Software and Affected Versions: qemu versions prior to 3.1.0 Description: A flaw in the qemu Media Transfer Protocol (MTP) implementation allows for a path traversal due to improper filename sanitization in the `usb mtp write data` function. This can lead to reading and writing arbitrary files, potentially causing a denial of service (DoS) scenario or possibly allowing code execution on the host. The issue is related to errors in synchronization when using a shared resource. Recommendations: For versions prior to 3.1.0, update to version 3.1.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the `usb mtp write data` function in the `hw/usb/dev-mtp.c` file to minimize the risk of exploitation.

A flaw in the glusterfs server allows repeated usage of the `GF META LOCK KEY` xattr, enabling a remote, authenticated attacker to create multiple locks for a single inode by using `setxattr` repetitively. This results in memory exhaustion of the glusterfs server node. The issue is related to an uncontrolled consumption of resources, which can be exploited by a remote attacker to cause a denial of service.

The issue allows a remote attacker with access to mount volumes to exploit the `GF XATTROP ENTRY IN KEY` xattrop, creating arbitrary, empty files on the target server via abuse of the 'features/index' translator.

The issue allows a remote, authenticated attacker to perform a denial of service attack by utilizing the `GF XATTR IOSTATS DUMP KEY` xattr. This can be exploited by mounting a Gluster volume and repeatedly calling `setxattr(2)` to trigger a state dump, resulting in the creation of an arbitrary number of files in the server's runtime directory.

The issue is related to an incorrect link resolution in the file system, which can be exploited by a remote attacker to execute arbitrary code or cause a denial of service.

A flaw was discovered in the glusterfs server where it fails to properly sanitize file paths in the `trusted.io-stats-dump` extended attribute used by the `debug/io-stats` translator. This allows an attacker to create files and execute arbitrary code if they have sufficient access to modify the extended attributes of files on a gluster volume.

An information disclosure issue was found in the glusterfs server, where an attacker could send a xattr request via glusterfs FUSE to check if any file exists.

The issue allows an authenticated attacker to create an arbitrary device and read data from any device attached to the glusterfs server node by exploiting the "mknod" call derived from mknod(2). This can be used to create files pointing to devices on a glusterfs server node.

A flaw was found in RPC request using `gfs3 mknod req` supported by glusterfs server. An authenticated attacker could use this flaw to write files to an arbitrary location via path traversal and execute arbitrary code on a glusterfs server node.

A flaw was found in the RPC request using `gfs3 symlink req` in the glusterfs server, allowing symlink destinations to point to file paths outside of the gluster volume. An authenticated attacker could use this flaw to create arbitrary symlinks pointing anywhere on the server and execute arbitrary code on glusterfs server nodes.

A flaw was found in the RPC request using `gfs2 create req` in the glusterfs server. An authenticated attacker could use this flaw to create arbitrary files and execute arbitrary code on glusterfs server nodes.

The issue is related to the dic unserialize function in the GlusterFS file system, which incorrectly handles negative key length values. This can be exploited by a remote attacker to access protected information. The flaw allows an attacker to read memory from other locations into the stored dict value.

Name of the Vulnerable Software and Affected Versions: qemu (affected versions not specified) Description: A flaw in qemu's Media Transfer Protocol (MTP) implementation allows an attacker with write access to the host filesystem shared with a guest to navigate the host filesystem in the context of the QEMU process and read any file the QEMU process has access to. This is due to a TOCTTOU (Time-of-Check-to-Time-of-Use) problem, where the code opening files and directories does not consider that the underlying filesystem may have changed since the time `lstat(2)` was called. Access to the filesystem may be local or via a network share protocol such as CIFS. Recommendations: At the moment, there is no information about a newer version that contains a fix for this vulnerability.