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CVE details

CVE-2023-23916

An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.

Score
6.5 medium
Published
2023-02-23
Links
NVD · cve.org

Affected ports (1)

PortPackageVersionStatusMaintainer
ftp/linux-rl9-curllinux-rl9-curl7.76.1_13unaddressedemulation@FreeBSD.org

VuXML

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-curl</name>
	<range><lt>7.88.0</lt></range>
      </package>
    </affects>
    <description>
      <body xmlns="http://www.w3.org/1999/xhtml">
	<p>An allocation of resources without limits or throttling vulnerability
	exists in curl <v7.88.0 based on the "chained" HTTP compression
	algorithms, meaning that a server response can be compressed multiple
	times and potentially with differentalgorithms. The number of
	acceptable "links" in this "decompression chain" wascapped, but the
	cap was implemented on a per-header basis allowing a maliciousserver
	to insert a virtually unlimited number of compression steps simply
	byusing many headers. The use of such a decompression chain could
	result in a "malloc bomb", making curl end up spending enormous
	amounts of allocated heap memory, or trying to and returning out of
	memory errors.</p>
      </body>
    </description>
    <references>
      <cvename>CVE-2023-23916</cvename>
      <url>https://nvd.nist.gov/vuln/detail/CVE-2023-23916</url>
    </references>
    <dates>
      <discovery>2023-02-23</discovery>
      <entry>2026-10-25</entry>
    </dates>
  </vuln>