Use after free in https://github.com/curl/curl
Priority HIGH 72CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 3 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.02489 84th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 fixed, 1 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 8.1.0 | — | No fix listed | CNA |
- https://github.com/curl/curl Vendor— Affected Fixed in 8.1.0 Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* | before 8.1.0 | Vulnerable | Haxx |
| cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* | 11.0 to before 11.7.9; 12.0 to before 12.6.8; 13.0 to before 13.5 | Vulnerable | Apple |
| cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:a:netapp:ontap_antivirus_connector:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | 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:h500s:-:*:*:*:*:*:*:* | 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:h700s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
- cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* Versions before 8.1.0 Vulnerable ·Haxx
- cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* Versions 11.0 to before 11.7.9; 12.0 to before 12.6.8; 13.0 to before 13.5 Vulnerable ·Apple
- cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:a:netapp:ontap_antivirus_connector:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* 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:h500s:-:*:*:*:*:*:*:* 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:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Remediation
Red Hat 2 advisories
- RHSA-2023:4629 Released 2023-08-15 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.57 security update
- Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr-1.7.0-8.el7jbcs, jbcs-httpd24-apr-devel-1.7.0-8.el7jbcs, jbcs-httpd24-curl-8.2.1-1.el7jbcs +12
- Red Hat JBoss Core Services on RHEL 8 jbcs-httpd24-apr-1.7.0-8.el8jbcs, jbcs-httpd24-apr-devel-1.7.0-8.el8jbcs, jbcs-httpd24-curl-8.2.1-1.el8jbcs +12
- RHSA-2023:4628 Released 2023-08-15 · Red Hat rating ModerateRed Hat JBoss Core Services Apache HTTP Server 2.4.57 security update
- Red Hat JBoss Core Services 2.4.57
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 JBoss Core Services 2.4.57 | Fixed | RHSA-2023:4628 |
| Red Hat JBoss Core Services on RHEL 7 Server | Fixed | RHSA-2023:4629 |
| Red Hat JBoss Core Services on RHEL 8 | Fixed | RHSA-2023:4629 |
Not affected: 6 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- 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-2023-28319
- 2026-10-03 Alias added: GHSA-6xq7-qqp2-9mmc
- 2026-10-09 Fix available: RHSA-2023:4628 · Red Hat
- 2026-11-07 Fix available: Red Hat JBoss Core Services 2.4.57 · Red Hat
References
Advisory 8
- https://security.netapp.com/advisory/ntap-20230609-0009/
- https://support.apple.com/kb/HT213843
- https://support.apple.com/kb/HT213844
- https://support.apple.com/kb/HT213845
- 20230725 APPLE-SA-2023-07-24-6 macOS Big Sur 11.7.9
- 20230725 APPLE-SA-2023-07-24-5 macOS Monterey 12.6.8
- 20230725 APPLE-SA-2023-07-24-4 macOS Ventura 13.5
- GLSA-202310-12
Sources
- CVE-2023-28319 · CVE Program
- CVE-2023-28319 · NVD
- FIRST EPSS
- GHSA-6xq7-qqp2-9mmc · GitHub Advisory Database · CC BY 4.0
- CVE-2023-28319 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences