Resource allocation without limits in https://github.com/curl/curl
Priority MEDIUM 62CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 9 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-770.
Summary
curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.36348 98th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 5 advisoriesRed Hat: 9 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | https://github.com/curl/curl | Fixed in 7.84.0 | — | No fix listed | CNA |
- https://github.com/curl/curl Vendor— Affected Fixed in 7.84.0 Fixed in — No fix listed CNA
CPE configurations NVD · 32
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* | before 7.84.0 | Vulnerable | Haxx |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 35 | Vulnerable | Fedoraproject |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Debian |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
| cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions before 7.84.0 Vulnerable ·Haxx
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
- cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:element_software:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Show 22 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:siemens:scalance_sc622-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_sc622-2c_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_sc626-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_sc626-2c_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:o:siemens:scalance_sc632-2c_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_sc632-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_sc636-2c_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_sc636-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_sc642-2c_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_sc642-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:o:siemens:scalance_sc646-2c_firmware:*:*:*:*:*:*:*:* | before 3.0 | Vulnerable | Siemens |
| cpe:2.3:h:siemens:scalance_sc646-2c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Siemens |
| cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* | 8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6 | Vulnerable | Splunk |
| cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* | 9.1.0 | Vulnerable | Splunk |
- cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:siemens:scalance_sc622-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_sc622-2c_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_sc626-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_sc626-2c_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:o:siemens:scalance_sc632-2c_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_sc632-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_sc636-2c_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_sc636-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_sc642-2c_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_sc642-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:o:siemens:scalance_sc646-2c_firmware:*:*:*:*:*:*:*:* Versions before 3.0 Vulnerable ·Siemens
- cpe:2.3:h:siemens:scalance_sc646-2c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Siemens
- cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* Versions 8.2.0 to before 8.2.12; 9.0.0 to before 9.0.6 Vulnerable ·Splunk
- cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* Versions 9.1.0 Vulnerable ·Splunk
Remediation
Red Hat 5 advisories
- RHSA-2023:3460 Released 2023-06-06 · Red Hat rating Moderatecurl security update
- Red Hat Enterprise Linux BaseOS AUS (v.8.4) curl-7.61.1-18.el8_4.3, libcurl-7.61.1-18.el8_4.3, libcurl-devel-7.61.1-18.el8_4.3 +1
- Red Hat Enterprise Linux BaseOS E4S (v.8.4) curl-7.61.1-18.el8_4.3, libcurl-7.61.1-18.el8_4.3, libcurl-devel-7.61.1-18.el8_4.3 +1
- Red Hat Enterprise Linux BaseOS TUS (v.8.4) curl-7.61.1-18.el8_4.3, libcurl-7.61.1-18.el8_4.3, libcurl-devel-7.61.1-18.el8_4.3 +1
- RHSA-2022:8841 Released 2022-12-08 · Red Hat rating ImportantRed Hat JBoss Core Services Apache HTTP Server 2.4.51 SP1 security update
- Red Hat JBoss Core Services
- RHSA-2022:8840 Released 2022-12-08 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.51 SP1 security update
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-curl-7.86.0-2.el7jbcs, jbcs-httpd24-httpd-2.4.51-37.el7jbcs, jbcs-httpd24-httpd-devel-2.4.51-37.el7jbcs +15
- Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-curl-7.86.0-2.el8jbcs, jbcs-httpd24-httpd-2.4.51-37.el8jbcs, jbcs-httpd24-httpd-devel-2.4.51-37.el8jbcs +15
Show 2 more Red Hat advisories
- RHSA-2022:6159 Released 2022-08-24 · Red Hat rating Moderatecurl security update
- Red Hat Enterprise Linux BaseOS (v. 8) curl-7.61.1-22.el8_6.4, libcurl-7.61.1-22.el8_6.4, libcurl-devel-7.61.1-22.el8_6.4 +1
- RHSA-2022:6157 Released 2022-08-24 · Red Hat rating Moderatecurl security update
- Red Hat Enterprise Linux AppStream (v. 9) libcurl-devel-7.76.1-14.el9_0.5
- Red Hat Enterprise Linux BaseOS (v. 9) curl-7.76.1-14.el9_0.5, curl-minimal-7.76.1-14.el9_0.5, libcurl-7.76.1-14.el9_0.5 +1
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
https://github.com/curl/curl — FEDORA-2022-1b3d7f6973
4 records Highest priority Priority HIGH 1 HIGH, 3 MEDIUM
Other records, highest priority first
- TI-2022-13917 Incorrect default permissions in https://github.com/curl/curlPriority HIGH 82
- TI-2022-13918 Out-of-bounds write in https://github.com/curl/curlPriority MEDIUM 60
- TI-2022-13915 Resource allocation without limits in https://github.com/curl/curlPriority MEDIUM 53
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| .NET Core 3.1 on Red Hat Enterprise Linux | Affected | No fix planned: Out of support scope |
| Red Hat Software Collections | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2022:6157 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2022:6159 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2022:6157 |
| Red Hat Enterprise Linux BaseOS AUS (v.8.4) | Fixed | RHSA-2023:3460 |
| Red Hat Enterprise Linux BaseOS E4S (v.8.4) | Fixed | RHSA-2023:3460 |
| Red Hat Enterprise Linux BaseOS TUS (v.8.4) | Fixed | RHSA-2023:3460 |
| Red Hat JBoss Core Services | Fixed | RHSA-2022:8841 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2022:8840 |
| Red Hat JBoss Core Services on RHEL 8 | Fixed | RHSA-2022:8840 |
Not affected: 4 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat JBoss Core Services on RHEL 7 Server
- Red Hat JBoss Core Services on RHEL 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-32206
- 2026-10-03 Alias added: GHSA-pphv-gw4r-gww8
- 2026-10-09 Fix available: RHSA-2022:8841 · Red Hat
- 2026-10-16 Fix available: Red Hat JBoss Core Services · Red Hat
References
Advisory 9
- FEDORA-2022-1b3d7f6973
- DSA-5197
- [debian-lts-announce] 20220828 [SECURITY] [DLA 3085-1] curl security update
- https://security.netapp.com/advisory/ntap-20220915-0003/
- https://support.apple.com/kb/HT213488
- 20221030 APPLE-SA-2022-10-27-5 Additional information for APPLE-SA-2022-10-24-2 macOS Ventura 13
- 20221030 APPLE-SA-2022-10-24-2 macOS Ventura 13
- GLSA-202212-01
- [oss-security] 20230215 curl: CVE-2023-23916: HTTP multi-header compression denial of service
Sources
- CVE-2022-32206 · CVE Program
- CVE-2022-32206 · NVD
- FIRST EPSS
- GHSA-pphv-gw4r-gww8 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-32206 · Red Hat security data · CC BY 4.0
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