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curl curl: When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl

curl · CVE-2023-38039
0 news outlets0 CERTs and agencies0 researchers

What is it?

When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API. However, curl did not have a limit in how many or how large headers it would accept in a response, allowing a malicious server to stream an endless series of headers and eventually cause curl to run out of heap memory.

Evidence

Vendor advisories (1)

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
7.5
EPSS
56.4%
First seen
7 h ago
Status
confirmed

All curl vulnerabilities