Vulnerability in title function Description: the title function defined in lib/termsupport.zsh uses print to set the terminal title to a user-supplied string. In Oh My Zsh, this function is always used securely, but custom user code could use the title function in a way that is unsafe. Fixed in: a263cdac. Impacted areas: - title function in lib/termsupport.zsh. - Custom user code using the title function.

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            "url": "https://github.com/ohmyzsh/ohmyzsh/commit/a263cdac"
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          "value": "# Vulnerability in `title` function **Description**: the `title` function defined in `lib/termsupport.zsh` uses `print` to set the terminal title to a user-supplied string. In Oh My Zsh, this function is always used securely, but custom user code could use the `title` function in a way that is unsafe. **Fixed in**: [a263cdac](https://github.com/ohmyzsh/ohmyzsh/commit/a263cdac). **Impacted areas**: - `title` function in `lib/termsupport.zsh`. - Custom user code using the `title` function."
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          "value": "**Exploit PoC**:\n\n1. Install Oh My Zsh.\n2. Add a custom function that calls `title` to set the terminal title with a user-supplied string.\n   For example:\n\n   ```sh\n   function dirpath_in_title {\n     title \"$PWD\"\n   }\n   add-zsh-hook precmd dirpath_in_title\n   ```\n\n3. Create and cd into a directory with a subshell command as its name:\n\n   ```sh\n   baddir=\u0027`echo pwned \u0026\u0026 id`\u0027\n   mkdir \"$baddir\" \u0026\u0026 cd \"$baddir\"\n   ```\n\n4. The `title` function incorrectly expands the subshell command (see screenshot):\n\n   ![2 title_function poc](https://user-images.githubusercontent.com/1441704/142874935-341ddd3c-21e8-4b9e-a5c1-77c0b3debacc.png)"
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          "url": "https://github.com/ohmyzsh/ohmyzsh/commit/a263cdac"
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      "title": "OS Command Injection in ohmyzsh/ohmyzsh",
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              "value": "# Vulnerability in `title` function **Description**: the `title` function defined in `lib/termsupport.zsh` uses `print` to set the terminal title to a user-supplied string. In Oh My Zsh, this function is always used securely, but custom user code could use the `title` function in a way that is unsafe. **Fixed in**: [a263cdac](https://github.com/ohmyzsh/ohmyzsh/commit/a263cdac). **Impacted areas**: - `title` function in `lib/termsupport.zsh`. - Custom user code using the `title` function."
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            "value": "**Exploit PoC**:\n\n1. Install Oh My Zsh.\n2. Add a custom function that calls `title` to set the terminal title with a user-supplied string.\n   For example:\n\n   ```sh\n   function dirpath_in_title {\n     title \"$PWD\"\n   }\n   add-zsh-hook precmd dirpath_in_title\n   ```\n\n3. Create and cd into a directory with a subshell command as its name:\n\n   ```sh\n   baddir=\u0027`echo pwned \u0026\u0026 id`\u0027\n   mkdir \"$baddir\" \u0026\u0026 cd \"$baddir\"\n   ```\n\n4. The `title` function incorrectly expands the subshell command (see screenshot):\n\n   ![2 title_function poc](https://user-images.githubusercontent.com/1441704/142874935-341ddd3c-21e8-4b9e-a5c1-77c0b3debacc.png)"
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