CVE-2021-32773
Racket is a general-purpose programming language and an ecosystem for language-oriented programming. In versions prior to 8.2, code evaluated using the Racket sandbox could cause system modules to incorrectly use attacker-created modules instead of their intended dependencies. This could allow system functions to be controlled by the attacker, giving access to facilities intended to be restricted. This problem is fixed in Racket version 8.2. A workaround is available, depending on system settings. For systems that provide arbitrary Racket evaluation, external sandboxing such as containers limit the impact of the problem. For multi-user evaluation systems, such as the `handin-server` system, it is not possible to work around this problem and upgrading is required.
EPSS 0.20% · 41.8th percentile
Risk Scores
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:22.04:LTS | racket | 8.2+dfsg1-2ubuntu1, 7.9+dfsg1-2build1, 0 |
| Ubuntu:20.04:LTS | racket | 0, 7.2+dfsg1-2ubuntu2, 7.2+dfsg1-2ubuntu3 |
| Ubuntu:16.04:LTS | racket | 6.3-1, 6.2-3, 6.2-2 |
| Ubuntu:18.04:LTS | racket | 6.9-2, 0, 6.11+dfsg1-1 |
| Ubuntu:25.10 | racket | 0, 8.12+dfsg1-7ubuntu1, 8.16+dfsg1-3ubuntu2 |
| Ubuntu:24.04:LTS | racket | *, 8.10+dfsg1-2ubuntu1, 8.10+dfsg1-2 |
Exploit Intelligence
Timeline
- Jul 19, 2021 CVE Published
- Jul 20, 2021 EPSS Score
- Sep 17, 2021 EPSS Score
- Nov 16, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Jan 14, 2022 EPSS Score
- Mar 15, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 13, 2022 EPSS Score
- Jul 12, 2022 EPSS Score
- Sep 10, 2022 EPSS Score
- Nov 9, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2021-32773 third-party-advisory
- https://github.com/racket/racket/security/advisories/GHSA-cgrw-p7p7-937c third-party-advisory
- https://github.com/racket/racket/commit/6ca4ffeca1e5877d44f835760ad89f18488d97e1 third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2021-32773 third-party-advisory