🛡️ CVE-2023-38039
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-770 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-770
Public Exploit ⚠️ Yes
Source NVD
Published 2023-09-15
Updated 2026-06-08
Modified 2025-12-02

Affected Packages

Software From version Fixed in
curl 7.84.0 8.3.0
fedora — —
windows-10-1809 — 10.0.17763.5122
windows-10-21h2 — 10.0.19044.3693
windows-10-22h2 — 10.0.19045.3693
windows-11-21h2 — 10.0.22000.2600
windows-11-22h2 — 10.0.22621.2715
windows-11-23h2 — 10.0.22631.2715
windows-server-2019 — 10.0.17763.5122
windows-server-2022 — 10.0.20348.2113

References

Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2023/Oct/17
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2024/Jan/34
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2024/Jan/37
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2024/Jan/38
Exploit, Issue Tracking, Patch, Third Party Advisory https://hackerone.com/reports/2072338
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2023/Oct/17
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2024/Jan/34
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2024/Jan/37
Mailing List, Third Party Advisory http://seclists.org/fulldisclosure/2024/Jan/38
Exploit, Issue Tracking, Patch, Third Party Advisory https://hackerone.com/reports/2072338

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