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CVE-2024-2398

HTTP/2 push headers memory-leak

Published: Mar 27, 2024Updated: Jul 30, 2025 Sources: CVE List NVD BDU csafCWE-772
NVD MITRE
8.6CVSSHIGH
EPSS Score
36.1%
Top 1.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-772

Affected Products

curlcurl
Library
OSS Libraries / generic-library
curlhaxxOSS Libraries
macosapple
On-premOS
Operating Systems / unix-bsd
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
active iq unified managernetappHardware Firmware
curloss-projectUSOSS Librariesaka libcurl, wcurl
haxxoss-projectSEOSS Librariesaka haxx.se
applecommercialUSMobile Appsaka apple inc., apple computer
fedoraprojectoss-projectUSOperating Systemsaka fedora project
netappcommercialUSHardware Firmware
and 17 more affected products View all →

Exploitability

Official Patch Available

References

https://curl.se/docs/CVE-2024-2398.json
curl.se
https://curl.se/docs/CVE-2024-2398.html
curl.se
https://hackerone.com/reports/2402845
hackerone.com
and 35 more references View all →

Timeline

Published
Mar 27, 2024
Last Updated
Jul 30, 2025

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