Arbitrary read/write in DBdeployer

Vulnerability Description

DBdeployer is a tool that deploys MySQL database servers easily. In DBdeployer before version 1.58.2, users unpacking a tarball may use a maliciously packaged tarball that contains symlinks to files external to the target. In such scenario, an attacker could induce dbdeployer to write into a system file, thus altering the computer defenses. For the attack to succeed, the following factors need to contribute: 1) The user is logged in as root. While dbdeployer is usable as root, it was designed to run as unprivileged user. 2) The user has taken a tarball from a non secure source, without testing the checksum. When the tarball is retrieved through dbdeployer, the checksum is compared before attempting to unpack. This has been fixed in version 1.58.2.

References

• https://github.com/datacharmer/dbdeployer/security/advisories/GHSA-47wr-426j-fr82
• https://github.com/datacharmer/dbdeployer/commit/548e256c1de2f99746e861454e7714ec6bc9bb10