Skip to content
Noroxi
NVD / CVE Program· CNA curl

CVE-2024-2398: HTTP/2 push headers memory-leak

Noroxi assessment

Priority: Plan (action score 45/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 36% (FIRST EPSS); higher than 98.4% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • Fixed version: Azure Linux 3.0 ARM 3.30.3-2, 8.0.40-2, 8.8.0-1; Azure Linux 3.0 x64 3.30.3-2, 8.0.40-2, 8.8.0-1; CBL Mariner 2.0 ARM 3.21.4-14, 8.0.40-1, 8.8.0-1.

Add it to your regular patch cycle. Upgrade to Azure Linux 3.0 ARM 3.30.3-2, 8.0.40-2, 8.8.0-1; Azure Linux 3.0 x64 3.30.3-2, 8.0.40-2, 8.8.0-1; CBL Mariner 2.0 ARM 3.21.4-14, 8.0.40-1, 8.8.0-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 8.6 · v3.1—No exploit Fix available
Published
Mar 27, 2024
Updated
Oct 15, 2026
EPSS
36.0% · 98th percentile

Report tools

JSON

Action score

45

Plan

Add it to your regular patch cycle.

CVSS
34 / 40 · 8.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
11 / 30 · 36.0%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2024-2398

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for haxx records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
haxxcurl
applemacos
fedoraprojectfedora
netappactive iq unified manager
netappontap select deploy administration utility
netappbrocade fabric operating system
netappbootstrap os
netapphci compute node
netapph300s firmware
netapph300s
netapph410s firmware
netapph410s

and 10 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apple macosbefore 12.7.6
  • apple macos13.0 and later · before 13.6.8
  • apple macos14.0 and later · before 14.6
  • fedoraproject fedora39
  • fedoraproject fedora40
  • haxx curl7.44.0 and later · before 8.7.0
  • netapp active iq unified managerall versions
  • netapp bootstrap osall versions
  • netapp brocade fabric operating systemall versions
  • netapp h300s firmwareall versions
  • netapp h410s firmwareall versions
  • netapp h500s firmwareall versions
  • netapp h610c firmwareall versions
  • netapp h610s firmwareall versions
  • netapp h615c firmwareall versions
  • netapp h700s firmwareall versions
  • netapp ontap select deploy administration utilityall versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (curl). Independent of NVD's CPE analysis and usually ahead of it.

  • curl curl

    • 8.6.0 and later · up to and including 8.6.0affected · semver
    • 8.5.0 and later · up to and including 8.5.0affected · semver
    • 8.4.0 and later · up to and including 8.4.0affected · semver
    • 8.3.0 and later · up to and including 8.3.0affected · semver
    • 8.2.1 and later · up to and including 8.2.1affected · semver
    • 8.2.0 and later · up to and including 8.2.0affected · semver
    • 8.1.2 and later · up to and including 8.1.2affected · semver
    • 8.1.1 and later · up to and including 8.1.1affected · semver
    • 8.1.0 and later · up to and including 8.1.0affected · semver
    • 8.0.1 and later · up to and including 8.0.1affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:8curlbefore 7.61.1-34.el8_10.27.61.1-34.el8_10.2
AlmaLinux:8libcurlbefore 7.61.1-34.el8_10.27.61.1-34.el8_10.2
AlmaLinux:8libcurl-develbefore 7.61.1-34.el8_10.27.61.1-34.el8_10.2
AlmaLinux:8libcurl-minimalbefore 7.61.1-34.el8_10.27.61.1-34.el8_10.2
AlmaLinux:9curlbefore 7.76.1-29.el9_4.17.76.1-29.el9_4.1
AlmaLinux:9curl-minimalbefore 7.76.1-29.el9_4.17.76.1-29.el9_4.1
AlmaLinux:9libcurlbefore 7.76.1-29.el9_4.17.76.1-29.el9_4.1
AlmaLinux:9libcurl-develbefore 7.76.1-29.el9_4.17.76.1-29.el9_4.1
AlmaLinux:9libcurl-minimalbefore 7.76.1-29.el9_4.17.76.1-29.el9_4.1
Alpine:v3.17curlfrom 7.44.0 · before 8.7.1-r08.7.1-r0
Debian:12curlbefore 7.88.1-10+deb12u67.88.1-10+deb12u6
Debian:13curlbefore 8.7.1-18.7.1-1
openSUSE:Leap Micro 5.3curlbefore 8.0.1-150400.5.44.18.0.1-150400.5.44.1
openSUSE:Tumbleweedcurlbefore 8.7.1-1.18.7.1-1.1
Red Hat:enterprise_linux:8::baseoscurlbefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoscurl-debuginfobefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoscurl-debugsourcebefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoscurl-minimal-debuginfobefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoslibcurlbefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoslibcurl-debuginfobefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoslibcurl-develbefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoslibcurl-minimalbefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:8::baseoslibcurl-minimal-debuginfobefore 0:7.61.1-34.el8_10.20:7.61.1-34.el8_10.2
Red Hat:enterprise_linux:9::appstreamcurl-debuginfobefore 0:7.76.1-29.el9_4.10:7.76.1-29.el9_4.1

+86

Same product

haxx: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-22901curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session t
    51Plan
  • CVE-2023-38039When curl retrieves an HTTP response, it stores the incoming headers so that they can be accessed later via the libcurl headers API.
    47Plan
  • CVE-2019-5482Heap buffer overflow in the TFTP protocol handler in cURL 7.19.4 to 7.65.3.
    44Plan

Published before and after this one in the same product

  • ← EarlierCVE-2024-2004Mar 27, 2024 · Usage of disabled protocol
    15Monitor
  • ← EarlierCVE-2024-2379Mar 27, 2024 · QUIC certificate check bypass with wolfSSL
    26Monitor
  • Later →CVE-2024-2466Mar 27, 2024 · TLS certificate check bypass with mbedTLS
    26Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Azure Linux 3.0 ARM3.30.3-2 · cmakeMicrosoft (MSRC)
Azure Linux 3.0 ARM8.0.40-2 · mysqlMicrosoft (MSRC)
Azure Linux 3.0 ARM8.8.0-1 · curlMicrosoft (MSRC)
Azure Linux 3.0 x643.30.3-2 · cmakeMicrosoft (MSRC)
Azure Linux 3.0 x648.0.40-2 · mysqlMicrosoft (MSRC)
Azure Linux 3.0 x648.8.0-1 · curlMicrosoft (MSRC)
CBL Mariner 2.0 ARM3.21.4-14 · cmakeMicrosoft (MSRC)
CBL Mariner 2.0 ARM8.0.40-1 · mysqlMicrosoft (MSRC)
CBL Mariner 2.0 ARM8.8.0-1 · curlMicrosoft (MSRC)
CBL Mariner 2.0 x643.21.4-14 · cmakeMicrosoft (MSRC)
CBL Mariner 2.0 x648.0.40-1 · mysqlMicrosoft (MSRC)
CBL Mariner 2.0 x648.8.0-1 · curlMicrosoft (MSRC)
almalinux:curl7.76.1-29.el9_4.1 · AlmaLinux:9Package registry (OSV)
almalinux:curl-minimal7.76.1-29.el9_4.1 · AlmaLinux:9Package registry (OSV)
almalinux:libcurl7.76.1-29.el9_4.1 · AlmaLinux:9Package registry (OSV)
almalinux:libcurl-devel7.76.1-29.el9_4.1 · AlmaLinux:9Package registry (OSV)
almalinux:libcurl-minimal7.76.1-29.el9_4.1 · AlmaLinux:9Package registry (OSV)
alpine:curl8.7.1-r0 · Alpine:v3.17Package registry (OSV)
debian:curl7.88.1-10+deb12u6 · Debian:12Package registry (OSV)
opensuse:curl8.0.1-150400.5.44.1 · openSUSE:Leap Micro 5.3Package registry (OSV)
red hat:jbcs-httpd24-curl0:8.7.1-2.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-curl-debuginfo0:8.7.1-2.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd0:2.4.57-10.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-debuginfo0:2.4.57-10.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-devel0:2.4.57-10.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-manual0:2.4.57-10.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-selinux0:2.4.57-10.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-httpd-tools0:2.4.57-10.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-libcurl0:8.7.1-2.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)
red hat:jbcs-httpd24-libcurl-devel0:8.7.1-2.el7jbcs · Red Hat:jboss_core_services:1::el7Package registry (OSV)

+5

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
low · data or configuration can be modified
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
Low
Availability impact
Low

Weakness class (CWE)

CWE-772 · Missing Release of Resource after Effective Lifetime

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (14 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records