Daniel Richman

**Name of the Vulnerable Software and Affected Versions** Xen (affected versions not specified) **Description** The issue allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host. This is achieved through string quotes and S-expressions in the bootloader configuration file when S-expression output format is requested. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Xen (affected versions not specified) **Description** The issue allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host. This is achieved through NUL bytes in the bootloader configuration file when nul-delimited output format is requested. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.