جزئیات آسیب‌پذیری

A buffer overflow, as described in CVE-2020-8927, exists in the embedded Brotli library.  Versions of IO::Compress::Brotli prior to 0.007 included a version of the brotli library prior to version 1.0.8, where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your IO::Compress::Brotli module to 0.007 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

• https://github.com/google/brotli/pull/826 issue-tracking
• https://github.com/advisories/GHSA-5v8v-66v8-mwm7 third-party-advisory
• https://github.com/timlegge/perl-IO-Compress-Brotli/blob/8b44c83b23bb4658179e1494af4b725a1bc476bc/Changes#L52 mitigation
• https://nvd.nist.gov/vuln/detail/CVE-2020-8927 vdb-entry
• https://github.com/google/brotli/commit/223d80cfbec8fd346e32906c732c8ede21f0cea6 patch