UNIX Symbolic Link (Symlink) Following

After completing a build with AWS Serverless Application Model Command Line Interface (SAM CLI) which include symlinks, the content of those symlinks are copied to the cache of the local workspace as regular files or directories. As a result, a user who does not have access to those symlinks outside of the Docker container would now have access via the local workspace. Users should upgrade to version 1.134.0 and ensure any forked or derivative code is patched to incorporate the new fixes. After upgrading, users must re-build their applications using the sam build --use-container to update the symlinks.Show less

When running the AWS Serverless Application Model Command Line Interface (SAM CLI) build process with Docker and symlinks are included in the build files, the container environment allows a user to access privileged files on the host by leveraging the elevated permissions granted to the tool. A user could leverage the elevated permissions to access restricted files via symlinks and copy them to a more permissive location on the container. Users should upgrade to v1.133.0 or newer and ensure any forked or derivative code is patched to incorporate the new fixes.Show less

`zip` is a zip library for rust which supports reading and writing of simple ZIP files. In the archive extraction routine of affected versions of the `zip` crate starting with version 1.3.0 and prior to version 2.3.0, symbolic links earlier in the archive are allowed to be used for later files in the archive without validation of the final canonicalized path, allowing maliciously crafted archives to overwrite arbitrary files in the file system when extracted. Users who extract untrusted archive files using the following high-level API method may be affected and critical files on the system may be overwritten with arbitrary file permissions, which can potentially lead to code execution. Version 2.3.0 fixes the issue.Show less

Arbitrary file overwrite during home directory recovery due to improper symbolic link handling. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.8.4.866, Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.1.892, Acronis Backup extension for Plesk (Linux) before build 1.8.7.615.Show less

Dell SupportAssist OS Recovery versions prior to 5.5.13.1 contain a symbolic link attack vulnerability. A low-privileged attacker with local access could potentially exploit this vulnerability, leading to arbitrary file deletion and Elevation of Privileges.Show less

pwn.college is an education platform to learn about, and practice, core cybersecurity concepts in a hands-on fashion. Incorrect symlink checks on user specified dojos allows for users (admin not required) to perform an LFI from the CTFd container. When a user clones or updates repositories, a check is performed to see if the repository had contained any symlinks. A malicious user could craft a repository with symlinks pointed to sensitive files and then retrieve them using the CTFd website.Show less

Dell SupportAssist for Home PCs versions 4.6.1 and prior and Dell SupportAssist for Business PCs versions 4.5.0 and prior, contain a symbolic link (symlink) attack vulnerability in the software remediation component. A low-privileged authenticated user could potentially exploit this vulnerability, gaining privileges escalation, leading to arbitrary deletion of files and folders from the system.Show less

Dell Inventory Collector Client, versions prior to 12.7.0, contains an Improper Link Resolution Before File Access vulnerability. A low-privilege attacker with local access may exploit this vulnerability, potentially resulting in Elevation of Privileges and unauthorized file system access.Show less

Dell Client Platform Firmware Update Utility contains an Improper Link Resolution vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to Elevation of Privileges.Show less

Rclone is a command-line program to sync files and directories to and from different cloud storage providers. Insecure handling of symlinks with --links and --metadata in rclone while copying to local disk allows unprivileged users to indirectly modify ownership and permissions on symlink target files when a superuser or privileged process performs a copy. This vulnerability could enable privilege escalation and unauthorized access to critical system files, compromising system integrity, confidentiality, and availability. This vulnerability is fixed in 1.68.2.Show less

Three vulnerabilities in the CLI of Cisco TelePresence CE and RoomOS could allow an authenticated, local attacker to overwrite arbitrary files on the local file system of an affected device. These vulnerabilities are due to improper access controls on files that are on the local file system. An attacker could exploit these vulnerabilities by placing a symbolic link in a specific location on the local file system of an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device. To exploit these vulnerabilities, an attacker would need to have a remote support user account. Note: CVE-2023-20092 does not affect Cisco DX70, DX80, TelePresence MX Series, or TelePresence SX Series devices. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.Show less

Three vulnerabilities in the CLI of Cisco TelePresence CE and RoomOS could allow an authenticated, local attacker to overwrite arbitrary files on the local file system of an affected device. These vulnerabilities are due to improper access controls on files that are on the local file system. An attacker could exploit these vulnerabilities by placing a symbolic link in a specific location on the local file system of an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device. To exploit these vulnerabilities, an attacker would need to have a remote support user account. Note: CVE-2023-20092 does not affect Cisco DX70, DX80, TelePresence MX Series, or TelePresence SX Series devices. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.Show less

A vulnerability in the CLI of Cisco TelePresence CE and RoomOS could allow an authenticated, local attacker to overwrite arbitrary files on the local file system of an affected device. This vulnerability is due to improper access controls on files that are on the local file system. An attacker could exploit this vulnerability by placing a symbolic link in a specific location on the local file system of an affected device. A successful exploit could allow the attacker to overwrite arbitrary files on the affected device. To exploit this vulnerability, an attacker would need to have a remote support user account. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.Show less

Sensitive information disclosure during file browsing due to improper symbolic link handling. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.8.3.818, Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.1.892.Show less

Arbitrary file overwrite during recovery due to improper symbolic link handling. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.8.3.818, Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.1.892, Acronis Backup extension for Plesk (Linux) before build 1.8.6.599, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.2.181.Show less