Skip to content
Fencer Vulns
high 8.6

CVE-2024-2398 in the critical feed json

HTTP/2 push headers memory-leak

published 2024-03-27 2 y ago modified 2026-10-15 25 d ago also EUVD-2024-27350 , GHSA-mq8w-c2j9-rqxc , JLSEC-2026-416

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
36.1%
EPSS 36.1% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known

Summary

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.

Patch / fix

  • julia CURL_jll 8.9.0+0
  • julia LibCURL_jll 8.7.1+0
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP V3.1.5
  • Siemens SINEMA Remote Connect Client V3.2 SP2
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP V3.1.5
  • Siemens SINEC NMS V3.0 SP1
  • curl Debian 12 7.88.1-10+deb12u6
  • curl Debian 14, Debian 13 8.7.1-1

debian advisories DEBIAN-CVE-2024-2398

  • curl Ubuntu 20.04 LTS 7.68.0-1ubuntu2.22
  • curl Ubuntu 22.04 LTS 7.81.0-1ubuntu1.16
  • curl Ubuntu 24.04 LTS 8.5.0-2ubuntu10.1
  • curl Ubuntu Pro 16.04 LTS 7.47.0-1ubuntu2.19+esm12
  • curl Ubuntu Pro 18.04 LTS 7.58.0-2ubuntu3.24+esm4

ubuntu advisories UBUNTU-CVE-2024-2398

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • curl RHEL 9 7.76.1-29.el9_4.1
  • libcurl RHEL 9 7.76.1-29.el9_4.1
  • curl-minimal RHEL 9 7.76.1-29.el9_4.1
  • libcurl-minimal RHEL 9 7.76.1-29.el9_4.1
  • curl RHEL 8 7.61.1-34.el8_10.2
  • libcurl RHEL 8 7.61.1-34.el8_10.2
  • libcurl-minimal RHEL 8 7.61.1-34.el8_10.2
  • jbcs-httpd24-curl jboss core services 1 8.7.1-2.el7jbcs

red hat advisories RHSA-2024:5529RHSA-2024:5654RHSA-2024:3998RHSA-2024:2693

  • curl Linux Micro 6.0 8.6.0-3.1
  • curl SLE Module for Basesystem 15 SP5, SLE Micro 5.5, SLE Micro 5.4 +12 more 8.0.1-150400.5.44.1
  • curl SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 8.0.1-11.86.2
  • curl SLE Micro 5.2, SLE Micro 5.1 7.66.0-150200.4.69.1

suse advisories SUSE-SU-2025:20029-1SUSE-SU-2024:1151-2SUSE-SU-2024:1151-3SUSE-SU-2024:1151-1SUSE-SU-2024:1150-1SUSE-SU-2024:1120-1

  • curl openSUSE Tumbleweed 8.7.1-1.1

opensuse advisories openSUSE-SU-2024:13805-1

  • curl AlmaLinux 8 7.61.1-34.el8_10.2
  • libcurl AlmaLinux 8 7.61.1-34.el8_10.2
  • libcurl-minimal AlmaLinux 8 7.61.1-34.el8_10.2
  • curl AlmaLinux 9 7.76.1-29.el9_4.1
  • libcurl AlmaLinux 9 7.76.1-29.el9_4.1
  • curl-minimal AlmaLinux 9 7.76.1-29.el9_4.1
  • libcurl-minimal AlmaLinux 9 7.76.1-29.el9_4.1

almalinux advisories ALSA-2024:5654ALSA-2024:5529

  • curl Rocky Linux 8 7.61.1-34.el8_10.2

rocky linux advisories RLSA-2024:5654

  • curl Alpine 3.24, Alpine 3.23, Alpine 3.22 +5 more 8.7.1-r0

alpine advisories ALPINE-CVE-2024-2398

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cmake CBL-Mariner 2.0 3.21.4-14
  • curl CBL-Mariner 2.0, Azure Linux 3.0 8.8.0-1
  • cmake Azure Linux 3.0 3.30.3-2

azure linux advisories AZL-37069AZL-37078AZL-37088AZL-37101

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-2398 updated cvss 7.5

curl: HTTP/2 push headers memory-leak

  • Red Hat Enterprise Linux 6 curl, libcurl Red Hat Enterprise Linux 7 curl, libcurl
    affected: no fix planned “Out of support scope”
  • Red Hat Software Collections httpd24-curl, httpd24-libcurl
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) libcurl-devel 7.76.1-29.el9_4.1, curl-debuginfo 7.76.1-29.el9_4.1, curl-debugsource 7.76.1-29.el9_4.1, libcurl-debuginfo 7.76.1-29.el9_4.1, curl-minimal-debuginfo 7.76.1-29.el9_4.1, libcurl-minimal-debuginfo 7.76.1-29.el9_4.1
    fixed: vendor fix RHSA-2024:5529
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) libcurl-devel 7.76.1-23.el9_2.7, curl-debuginfo 7.76.1-23.el9_2.7, curl-debugsource 7.76.1-23.el9_2.7, libcurl-debuginfo 7.76.1-23.el9_2.7, curl-minimal-debuginfo 7.76.1-23.el9_2.7, libcurl-minimal-debuginfo 7.76.1-23.el9_2.7
    fixed: vendor fix RHSA-2024:3998
  • Red Hat Enterprise Linux BaseOS (v. 8) curl 7.61.1-34.el8_10.2, libcurl 7.61.1-34.el8_10.2, libcurl-minimal 7.61.1-34.el8_10.2
    fixed: vendor fix RHSA-2024:5654
  • Red Hat Enterprise Linux BaseOS (v. 9) curl 7.76.1-29.el9_4.1, libcurl 7.76.1-29.el9_4.1, curl-minimal 7.76.1-29.el9_4.1, libcurl-minimal 7.76.1-29.el9_4.1
    fixed: vendor fix RHSA-2024:5529
  • Red Hat Enterprise Linux BaseOS EUS (v.9.2) curl 7.76.1-23.el9_2.7, libcurl 7.76.1-23.el9_2.7, curl-minimal 7.76.1-23.el9_2.7, libcurl-minimal 7.76.1-23.el9_2.7
    fixed: vendor fix RHSA-2024:3998
  • Red Hat JBoss Core Services
    fixed: vendor fix RHSA-2024:2694
show 4 more
  • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl 8.7.1-2.el7jbcs, jbcs-httpd24-httpd 2.4.57-10.el7jbcs, jbcs-httpd24-libcurl 8.7.1-2.el7jbcs, jbcs-httpd24-mod_md 2.4.24-6.el7jbcs, jbcs-httpd24-mod_ssl 2.4.57-10.el7jbcs, jbcs-httpd24-nghttp2 1.43.0-13.el7jbcs, +11 more Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl 8.7.1-2.el8jbcs, jbcs-httpd24-httpd 2.4.57-10.el8jbcs, jbcs-httpd24-libcurl 8.7.1-2.el8jbcs, jbcs-httpd24-mod_md 2.4.24-6.el8jbcs, jbcs-httpd24-mod_ssl 2.4.57-10.el8jbcs, jbcs-httpd24-nghttp2 1.43.0-13.el8jbcs, +11 more
    fixed: vendor fix RHSA-2024:2693
  • Red Hat Service Interconnect 1 service-interconnect/skupper-router-rhel9 2.5.3-5, service-interconnect/skupper-router-rhel9 2.5.3-6, service-interconnect/skupper-operator-bundle 1.5.5-3, service-interconnect/skupper-operator-bundle 1.5.5-4, service-interconnect/skupper-config-sync-rhel9 1.5.5-3, service-interconnect/skupper-config-sync-rhel9 1.5.5-4, +10 more
    fixed: vendor fix RHSA-2024:11109
  • Red Hat Service Interconnect 1.4 service-interconnect/skupper-router-rhel9 2.4.3-6, service-interconnect/skupper-router-rhel9 2.4.3-7, service-interconnect/skupper-operator-bundle 1.4.7-2, service-interconnect/skupper-operator-bundle 1.4.7-4, service-interconnect/skupper-config-sync-rhel9 1.4.7-2, service-interconnect/skupper-config-sync-rhel9 1.4.7-3, +6 more
    fixed: vendor fix RHSA-2024:7213
  • Red Hat Enterprise Linux 10 curl
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-24-319-16 updated cvss 8.6

Hitachi Energy MSM (Update A)

  • Hitachi Energy MSM
    not affected

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-23-348-10 updated cvss 7.5

Siemens SIMATIC S7-1500

  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= 3.1.0, < 3.1.5 Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= 3.1.0, < 3.1.5 Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= 3.1.0, < 3.1.5
    affected: fixed in V3.1.5, mitigation support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

36.08% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • hackerone.com https://hackerone.com/reports/2402845 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
OSV 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L

Affected packages

ecosystem package affected fixed in
julia CURL_jll
<8.9.0+0
8.9.0+0
julia LibCURL_jll
<8.7.1+0
8.7.1+0

Affected products

  • curl curl
  • Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
  • Siemens SINEMA Remote Connect Client
  • Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
  • Siemens SINEC NMS

Classification

Weakness
  • CWE-772 Missing Release of Resource after Effective Lifetime

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.