CVE-2021-32823: Potential Denial-of-Service in bindata
First published: Wed Jun 23 2021(Updated: )
In the bindata RubyGem before version 2.4.10 there is a potential denial-of-service vulnerability. In affected versions it is very slow for certain classes in BinData to be created. For example `BinData::Bit100000`, `BinData::Bit100001`, `BinData::Bit100002`, `BinData::Bit<N>`. In combination with `<user_input>.constantize` there is a potential for a CPU-based DoS. In version 2.4.10, bindata improved the creation time of Bits and Integers.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Bindata Project Bindata | <2.4.10 | |
| GitLab GitLab | >=12.0 | |
| GitLab GitLab | >=12.0 | |
| GitLab GitLab | >=12.0<13.10.5 | |
| GitLab GitLab | >=12.0<13.10.5 | |
| GitLab GitLab | >=13.11.0<13.11.5 | |
| GitLab GitLab | >=13.11.0<13.11.5 | |
| GitLab GitLab | >=13.12.0<13.12.2 | |
| GitLab GitLab | >=13.12.0<13.12.2 | |
| rubygems/bindata | <2.4.10 | 2.4.10 |
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Reference Links
- https://about.gitlab.com/releases/2021/06/01/security-release-gitlab-13-12-2-released/#update-bindata-dependency
- https://github.com/dmendel/bindata/blob/v2.4.10/ChangeLog.rdoc#version-2410-2021-05-18-
- https://github.com/dmendel/bindata/commit/d99f050b88337559be2cb35906c1f8da49531323
- https://github.com/rubysec/ruby-advisory-db/issues/476
- https://rubygems.org/gems/bindata
- https://github.com/dmendel/bindata/blob/master/ChangeLog.rdoc#version-2410-2021-05-18-
- https://nvd.nist.gov/vuln/detail/CVE-2021-32823
- https://github.com/advisories/GHSA-hj56-84jw-67h6 (Advisory)
Frequently Asked Questions
What is CVE-2021-32823?
CVE-2021-32823 is a potential denial-of-service vulnerability in the bindata RubyGem before version 2.4.10.
How does CVE-2021-32823 impact affected versions of bindata?
In affected versions of bindata, certain classes in BinData, such as BinData::Bit100000 and BinData::Bit100001, are very slow to be created, resulting in a potential denial-of-service vulnerability.
Which software is affected by CVE-2021-32823?
The bindata RubyGem before version 2.4.10, as well as Gitlab versions 12.0 and above (both Community and Enterprise editions) are affected by CVE-2021-32823.
What is the severity of CVE-2021-32823?
CVE-2021-32823 has a severity rating of medium (3.7).
How can I fix CVE-2021-32823?
To fix CVE-2021-32823, update the bindata RubyGem to version 2.4.10 or higher.
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