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CVE details

CVE-2023-36632

The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger "RecursionError: maximum recursion depth exceeded while calling a Python object" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code.

Score
7.5 high
Published
2023-06-25
Links
NVD · cve.org

Affected ports (2)

PortPackageVersionStatusMaintainer
lang/linux-rl9-python3linux-rl9-python393.9.25unaddressedemulation@FreeBSD.org
lang/python27python272.7.18_5unaddressedpython@FreeBSD.org

Template for a VuXML entry

Range taken from the CVE record, check it before committing. make newentry in security/vuxml creates the vid.

  <vuln vid="FIXME (make newentry)">
    <topic>FIXME -- FIXME</topic>
    <affects>
      <package>
	<name>linux-rl9-python39</name>
	<range><lt>FIXME</lt></range>
      </package>
      <package>
	<name>python27</name>
	<range><lt>FIXME</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>The legacy email.utils.parseaddr function in Python through 3.11.4
	allows attackers to trigger "RecursionError: maximum recursion depth
	exceeded while calling a Python object" via a crafted argument. This
	argument is plausibly an untrusted value from an application's input
	data that was supposed to contain a name and an e-mail address. NOTE:
	email.utils.parseaddr is categorized as a Legacy API in the
	documentation of the Python email package. Applications should instead
	use the email.parser.BytesParser or email.parser.Parser class. NOTE:
	the vendor's perspective is that this is neither a vulnerability nor a
	bug. The email package is intended to have size limits and to throw an
	exception when limits are exceeded; they were exceeded by the example
	demonstration code.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2023-36632</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2023-36632</url>
    </references>
    <dates>
      <discovery>2023-06-25</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>