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high7.5

CVE-2023-38039

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

Impact

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.

Affected products

VendorProductAffected versions
HaxxCurl
from 7.84.0 before 8.3.0
FedoraprojectFedora
Versions 37, 38, 39
MicrosoftWindows 10 1809
before 10.0.17763.5122
MicrosoftWindows 10 21h2
before 10.0.19044.3693
MicrosoftWindows 10 22h2
before 10.0.19045.3693
MicrosoftWindows 11 21h2
before 10.0.22000.2600
MicrosoftWindows 11 22h2
before 10.0.22621.2715
MicrosoftWindows 11 23h2
before 10.0.22631.2715
MicrosoftWindows Server 2019
before 10.0.17763.5122
MicrosoftWindows Server 2022
before 10.0.20348.2113

Weakness classification

CWE-770

References