REDHAT-BUG-2026752: Buffer Overflow
First published: Thu Nov 25 2021(Updated: )
A security vulnerability that causes buffer overflow when you pass a very large string (> 700 MB) to `CGI.escape_html` on a platform where `long` type takes 4 bytes, typically, Windows. Reference: <a href="https://www.ruby-lang.org/en/news/2021/11/24/buffer-overrun-in-cgi-escape_html-cve-2021-41816/">https://www.ruby-lang.org/en/news/2021/11/24/buffer-overrun-in-cgi-escape_html-cve-2021-41816/</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ruby |
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Reference Links
- https://www.ruby-lang.org/en/news/2021/11/24/buffer-overrun-in-cgi-escape_html-cve-2021-41816/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2026754
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2026753
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2026756
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2026755
- https://access.redhat.com/errata/RHSA-2022:6855
- https://access.redhat.com/errata/RHSA-2022:6856
- https://access.redhat.com/security/cve/cve-2021-41816
- https://bugzilla.redhat.com/show_bug.cgi?id=2026752
Frequently Asked Questions
What is the severity of REDHAT-BUG-2026752?
The severity of REDHAT-BUG-2026752 is high due to its potential to cause buffer overflow issues.
How do I fix REDHAT-BUG-2026752?
To fix REDHAT-BUG-2026752, it is recommended to apply the latest security patches provided by the Ruby maintainers.
Which versions of Ruby are affected by REDHAT-BUG-2026752?
REDHAT-BUG-2026752 affects Ruby environments where the `CGI.escape_html` method is used and the platform's `long` type is 4 bytes.
Is REDHAT-BUG-2026752 a remote execution vulnerability?
No, REDHAT-BUG-2026752 is not classified as a remote execution vulnerability but rather a buffer overflow issue.
What environments are primarily impacted by REDHAT-BUG-2026752?
REDHAT-BUG-2026752 primarily impacts Windows environments due to the 4-byte long type behavior.
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