An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the "chained" HTTP compression algorithms, meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable "links" in this "decompression chain" wascapped, but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a "malloc bomb", making curl end up spending enormous amounts of allocated heap memory, or trying to and returning out of memory errors.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-minimalUpgrade curl-minimalUpgrade libcurlUpgrade libcurl-develUpgrade curl | Mar 14, 2023 | Feb 23, 2023 |
| Alpine Linux | — | Upgrade curl | Aug 22, 2024 | Feb 23, 2023 |
| Amazon Linux Ami 2 | — | Upgrade curl-debuginfoUpgrade libcurlUpgrade curlUpgrade libcurl-devel | Mar 7, 2023 | Feb 23, 2023 |
| Amazon_linux | — | Upgrade curl | Apr 21, 2023 | Feb 16, 2023 |
| Amazon_linux_2023 | — | Upgrade libcurl-minimalUpgrade libcurl-debuginfoUpgrade curl-minimal-debuginfoUpgrade curl-debugsourceUpgrade curl-debuginfoUpgrade curl-minimalUpgrade libcurl-minimal-debuginfoUpgrade libcurlUpgrade libcurl-develUpgrade curl | Feb 17, 2025 | Feb 15, 2023 |
| Centos_linux | — | Upgrade libcurl-debuginfoUpgrade libcurl-minimalUpgrade curl-minimalUpgrade libcurl-develUpgrade curlUpgrade curl-debugsourceUpgrade libcurlUpgrade curl-minimal-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade curl-debuginfo | Mar 9, 2023 | Feb 23, 2023 |
| Debian | — | Upgrade curl | Feb 27, 2023 | Feb 23, 2023 |
| Freebsd | — | Upgrade curl | Mar 6, 2023 | Mar 5, 2023 |
| Gentoo Linux | — | Upgrade net-misc/curl. | Oct 12, 2023 | Feb 23, 2023 |
| Huawei Euleros 2_0_sp11 | — | Upgrade curlUpgrade libcurl | Jul 5, 2023 | Feb 23, 2023 |
| Huawei Euleros 2_0_sp8 | — | Upgrade curlUpgrade libcurl-develUpgrade libcurl | Apr 13, 2023 | Feb 23, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade libcurlUpgrade curl | May 10, 2023 | Feb 23, 2023 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory2 | Jul 27, 2023 | Feb 23, 2023 |
| Nutanix Ahv | — | Upgrade Nutanix AHV to the latest version | Jun 5, 2026 | Sep 4, 2023 |
| Oracle_linux | — | Upgrade curlUpgrade libcurlUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl-minimal | Mar 8, 2023 | Feb 15, 2023 |
| Redhat_linux | — | Upgrade curl-minimal-debuginfoUpgrade libcurlUpgrade curl-debuginfoNo solution existsUpgrade libcurl-debuginfoUpgrade curl-debugsourceUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurl-minimalUpgrade libcurl-minimal-debuginfoUpgrade curl | Mar 9, 2023 | Feb 23, 2023 |
| Rocky_linux | — | Upgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade curl-debugsourceUpgrade libcurlUpgrade curlUpgrade libcurl-develUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimal | Mar 12, 2024 | Feb 23, 2023 |
| Splunk | — | Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Enterprise to version 9.0.6Upgrade Splunk Enterprise to version 9.1.1 | Sep 30, 2025 | Feb 23, 2023 |
| Suse | — | Upgrade libcurl4Upgrade libcurl-develUpgrade libcurl4-32bitUpgrade curlUpgrade libcurl-devel-32bit | Feb 16, 2023 | Feb 15, 2023 |
| Ubuntu | — | Upgrade libcurl3-nssUpgrade libcurl4Upgrade curlUpgrade libcurl3-gnutls | Mar 22, 2023 | Feb 23, 2023 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Feb 23, 2023 |
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