Home/CVE/When an application tells libcurl it wants to allow HTTP/2 server push, and the amount of received headers for the push
CVE

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

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.

HIGH · CVSS 8.6 EPSS 0.02015
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules15 YARA rules0

Weakness Classification

Affected Products & Versions

16
haxx curl>= 7.44.0 and < 8.7.0
apple macos< 12.7.6
apple macos>= 13.0 and < 13.6.8
apple macos>= 14.0 and < 14.6

Public Exploits & PoCs

1
pochackerone.com · 2402845hackerone.com

Sigma Hunt Rules

15
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Download and Execute Pattern via Curl/Wget
producthighSuspicious File Download From File Sharing Domain Via Curl.EXE
producthighSuspicious File Download From IP Via Curl.EXE
producthighCurl Download And Execute Combination
producthighSuspicious Curl.EXE Download
productmediumSuspicious Curl File Upload - Linux

Scoring & Timeline

8.6
HIGH · CVSS v3.1 · 2499f714-1537-4658-8207-48ae4bb9eae9
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD27 Mar 2024 · 08:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.

Vendor Advisories

30
suse-csafSUSE-SU-2025:20029-1
siemens-csafSSA-331112
siemens-csafSSA-417159
rhsaRHSA-2024:7213Moderate
🔗

References & Sources

12
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