Command Injection Affecting rebber package, versions <5.2.1


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

Exploit Maturity
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  • Snyk IDSNYK-JS-REBBER-1583439
  • published8 Sept 2021
  • disclosed7 Sept 2021
  • creditUnknown

Introduced: 7 Sep 2021

CVE NOT AVAILABLE CWE-78  (opens in a new tab)

How to fix?

Upgrade rebber to version 5.2.1 or higher.

Overview

rebber is a package that Stringifies MDAST to LaTeX.

Affected versions of this package are vulnerable to Command Injection. The reported problem came from CodeBlocks, which could be escaped to insert malicious LaTeX. Anyone using rebber without sanitization of code content or a custom macro is impacted by this vulnerability.

PoC

```
\end{CodeBlock}

% Will insert into the generated LaTeX the result of executing COMMAND on the system. \immediate\write18{COMMAND > outputrce} \input{outputrce}

\begin{CodeBlock}{text}

</code></pre>

References

CVSS Scores

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