Banks: Symlink traversal and arbitrary file disclosure/overwrite in DirectoryPromptRegistry

[ Description ]Official description

Banks generates meaningful LLM prompts using a simple template language. Prior to 2.5.1, Banks DirectoryPromptRegistry does not reject symbolic links for index.json or discovered and existing .jinja prompt files. In an application where untrusted users can influence a prompt directory, DirectoryPromptRegistry._scan() and DirectoryPromptRegistry.get() can follow a link outside the registry root and disclose a file, while DirectoryPromptRegistry.set(), DirectoryPromptRegistry._save(), and DirectoryPromptRegistry._load() can read or overwrite an external link target. The issue requires attacker influence over the registry directory or its extracted contents. This issue is fixed in version 2.5.1.

[ Fixes ]Fixes and patches

• banks 2.5.1Fixed version · GitHub Advisories · pip package banks: upgrade to 2.5.1 or later (affected <= 2.5.0)

[ Packages ]Affected open-source packages

• banks pipAffected <= 2.5.0 · fixed in 2.5.1 · GHSA-556j-vv39-8rqv

[ References ]References

• github.com/masci/banks/commit/23ed13e50b4e217693fa5f9c30943fac8a41582f
• github.com/masci/banks/pull/79
• github.com/masci/banks/releases/tag/v2.5.1
• github.com/masci/banks/security/advisories/GHSA-556j-vv39-8rqv