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Vulnerability record · CVE-2024-2398 · published 27 March 2024

CVE-2024-2398: Haxx curl vulnerability

Haxx · Curl

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.

8.6 CVSS 3.1 High EPSS 36% · top 1.5% CWE-772 · CWE-772
8.6CVSS 3.1 base score
36%EPSS exploitation probability, 30 days
NoNot in CISA KEV
14Affected product versions listed by NVD
29References, 2 tagged exploit
15 Oct 2026Last modified by NVD

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.

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

Affected products

14 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://seclists.org/fulldisclosure/2024/Jul/18 Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/19 Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/20 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2024/03/27/3 Mailing ListThird Party Advisory
https://curl.se/docs/CVE-2024-2398.html Vendor Advisory
https://curl.se/docs/CVE-2024-2398.json Vendor Advisory
https://hackerone.com/reports/2402845 ExploitIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2D44YLAUFJU6BZ4XFG2FYV7SB Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMD6UYKCCRCYETWQZUJ65ZRFU Third Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0009/ Third Party Advisory
https://support.apple.com/kb/HT214118 Release NotesVendor Advisory
https://support.apple.com/kb/HT214119 Release NotesVendor Advisory
https://support.apple.com/kb/HT214120 Release NotesVendor Advisory
http://seclists.org/fulldisclosure/2024/Jul/18 Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/19 Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2024/Jul/20 Mailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2024/03/27/3 Mailing ListThird Party Advisory
https://curl.se/docs/CVE-2024-2398.html Vendor Advisory
https://curl.se/docs/CVE-2024-2398.json Vendor Advisory
https://hackerone.com/reports/2402845 ExploitIssue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2D44YLAUFJU6BZ4XFG2FYV7SB Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMD6UYKCCRCYETWQZUJ65ZRFU Third Party Advisory
https://security.netapp.com/advisory/ntap-20240503-0009/ Third Party Advisory
https://support.apple.com/kb/HT214118 Release NotesVendor Advisory
https://support.apple.com/kb/HT214119 Release NotesVendor Advisory
https://support.apple.com/kb/HT214120 Release NotesVendor Advisory
https://cert-portal.siemens.com/productcert/html/ssa-331112.html
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
https://cert-portal.siemens.com/productcert/html/ssa-417159.html

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2024-2398), CISA KEV, FIRST EPSS (scores of 2026-11-12). This page is refreshed as NVD updates the record.