CVE-2024-2398: curl — Exploit & Fix

Description

When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting, libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory. Further, this error condition fails silently and is therefore not easily detected by an application.

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CVSS v3.1 Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Weakness Type (CWE)

CWE-772 CWE-772

Affected Products

Vendor	Product	Versions
haxx	curl	7.44.0 — 8.7.0
apple	macos	< 12.7.6
apple	macos	13.0 — 13.6.8
apple	macos	14.0 — 14.6
fedoraproject	fedora	All
fedoraproject	fedora	All
netapp	active_iq_unified_manager	All
netapp	ontap_select_deploy_administration_utility	All
netapp	brocade_fabric_operating_system	All
netapp	bootstrap_os	All
netapp	hci_compute_node	All
netapp	h300s_firmware	All
netapp	h300s	All
netapp	h410s_firmware	All
netapp	h410s	All
netapp	h500s_firmware	All
netapp	h500s	All
netapp	h610c_firmware	All
netapp	h610c	All
netapp	h610s_firmware	All
netapp	h610s	All
netapp	h615c_firmware	All
netapp	h615c	All
netapp	h700s_firmware	All
netapp	h700s	All

References

Advisories & Patches

https://curl.se/docs/CVE-2024-2398.html https://curl.se/docs/CVE-2024-2398.json https://support.apple.com/kb/HT214118 https://support.apple.com/kb/HT214119 https://support.apple.com/kb/HT214120 https://curl.se/docs/CVE-2024-2398.html https://curl.se/docs/CVE-2024-2398.json https://support.apple.com/kb/HT214118 https://support.apple.com/kb/HT214119 https://support.apple.com/kb/HT214120

Exploits

https://hackerone.com/reports/2402845 https://hackerone.com/reports/2402845

Other References

http://seclists.org/fulldisclosure/2024/Jul/18 http://seclists.org/fulldisclosure/2024/Jul/19 http://seclists.org/fulldisclosure/2024/Jul/20 http://www.openwall.com/lists/oss-security/2024/03/27/3 https://lists.fedoraproject.org/archives/list/[email protected]/message/2D44YLAUFJU6BZ4XFG2FYV7SBKXB5IZ6/ https://lists.fedoraproject.org/archives/list/[email protected]/message/GMD6UYKCCRCYETWQZUJ65ZRFULT6SHLI/ https://security.netapp.com/advisory/ntap-20240503-0009/ http://seclists.org/fulldisclosure/2024/Jul/18 http://seclists.org/fulldisclosure/2024/Jul/19 http://seclists.org/fulldisclosure/2024/Jul/20

Frequently Asked Questions

What is CVE-2024-2398? +

When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push surpasses the maximum allowed limit (1000), libcurl aborts the server push. When aborting, libcurl inadvertently does not free all the previously allocated headers and instead leaks the memory. Further, this error condition fails silently and is therefore not easily detected by an application. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2024-2398? +

CVE-2024-2398 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-2398? +

CVE-2024-2398 affects products from apple, fedoraproject, haxx, netapp, specifically: active_iq_unified_manager, bootstrap_os, brocade_fabric_operating_system, curl, fedora, h300s, h300s_firmware, h410s, h410s_firmware, h500s, h500s_firmware, h610c, h610c_firmware, h610s, h610s_firmware, h615c, h615c_firmware, h700s, h700s_firmware, hci_compute_node, macos, ontap_select_deploy_administration_utility. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-2398? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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