| id: GO-2021-0242 |
| modules: |
| - module: std |
| versions: |
| - fixed: 1.15.13 |
| - introduced: 1.16.0-0 |
| - fixed: 1.16.5 |
| vulnerable_at: 1.16.4 |
| packages: |
| - package: math/big |
| symbols: |
| - Rat.SetString |
| skip_fix: 'TODO: revisit this reason (fix appears to not work with Go <1.18)' |
| summary: Panic on inputs with large exponents in math/big |
| description: |- |
| Rat.SetString and Rat.UnmarshalText may cause a panic or an unrecoverable fatal |
| error if passed inputs with very large exponents. |
| published: 2022-02-17T17:33:07Z |
| cves: |
| - CVE-2021-33198 |
| credits: |
| - The OSS-Fuzz project (discovery) |
| - Emmanuel Odeke (reporter) |
| references: |
| - fix: https://go.dev/cl/316149 |
| - fix: https://go.googlesource.com/go/+/6c591f79b0b5327549bd4e94970f7a279efb4ab0 |
| - web: https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI |
| - report: https://go.dev/issue/45910 |
| review_status: REVIEWED |
