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 libcurlUpgrade curlUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurl-minimal | Mar 14, 2023 | Feb 23, 2023 |
| Alpine Linux | — | Upgrade curl | Aug 22, 2024 | Feb 23, 2023 |
| Amazon Linux Ami 2 | — | Upgrade curlUpgrade libcurl-develUpgrade libcurlUpgrade curl-debuginfo | Mar 7, 2023 | Feb 23, 2023 |
| Amazon_linux | — | Upgrade curl | Apr 21, 2023 | Feb 16, 2023 |
| Amazon_linux_2023 | — | Upgrade libcurl-develUpgrade libcurl-minimal-debuginfoUpgrade libcurlUpgrade curlUpgrade curl-minimalUpgrade curl-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurl-debuginfoUpgrade curl-debugsourceUpgrade libcurl-minimal | Feb 17, 2025 | Feb 15, 2023 |
| Centos_linux | — | Upgrade libcurl-develUpgrade libcurl-minimalUpgrade curlUpgrade curl-minimalUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade libcurlUpgrade curl-debugsourceUpgrade curl-minimal-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 libcurlUpgrade libcurl-develUpgrade curl | Apr 13, 2023 | Feb 23, 2023 |
| Huawei Euleros 2_0_sp9 | — | Upgrade curlUpgrade libcurl | 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 curl-minimalUpgrade libcurl-minimalUpgrade libcurl-develUpgrade libcurlUpgrade curl | Mar 8, 2023 | Feb 15, 2023 |
| Redhat_linux | — | No solution existsUpgrade libcurlUpgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-debugsourceUpgrade libcurl-develUpgrade curlUpgrade curl-minimal | Mar 9, 2023 | Feb 23, 2023 |
| Rocky_linux | — | Upgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade libcurl-develUpgrade libcurlUpgrade curl-debugsourceUpgrade curlUpgrade libcurl-minimalUpgrade libcurl-minimal-debuginfo | Mar 12, 2024 | Feb 23, 2023 |
| Splunk | — | Upgrade Splunk Universal Forwarder to version 9.0.6Upgrade Splunk Universal Forwarder to version 9.1.1Upgrade Splunk Universal Forwarder to version 8.2.12Upgrade Splunk Enterprise to version 8.2.11Upgrade Splunk Universal Forwarder to version 9.0.5Upgrade Splunk Universal Forwarder to version 8.1.14Upgrade Splunk Universal Forwarder to version 8.2.11Upgrade Splunk Enterprise to version 9.0.5Upgrade Splunk Enterprise to version 9.1.1Upgrade Splunk Enterprise to version 8.1.14Upgrade Splunk Enterprise to version 8.2.12Upgrade Splunk Enterprise to version 9.0.6 | Sep 30, 2025 | Feb 23, 2023 |
| Suse | — | Upgrade libcurl4Upgrade libcurl4-32bitUpgrade curlUpgrade libcurl-develUpgrade libcurl-devel-32bit | Feb 16, 2023 | Feb 15, 2023 |
| Ubuntu | — | Upgrade curlUpgrade libcurl3-gnutlsUpgrade libcurl4Upgrade libcurl3-nss | 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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