rar5

The rar5 tag on WindowsForum.com covers discussions about the RAR5 archive format, particularly in relation to libarchive, a widely used library for reading and writing archives. A key topic is a security vulnerability where a logic error in libarchive's RAR5 decoder can cause an infinite loop when processing a specially crafted RAR5 archive with a trailing compressed block that produces no output. This denial-of-service issue can hang processes calling archive_read_data() until the process is killed. The tag includes patch and mitigation strategies for this vulnerability, as well as general troubleshooting and technical details about RAR5 support in libarchive.