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.
{ "availability": "No subscription required", "binaries": [ { "binary_name": "curl", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "curl-dbgsym", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl3-gnutls", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl3-gnutls-dbgsym", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl3-nss", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl3-nss-dbgsym", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl4", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl4-dbgsym", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl4-doc", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl4-gnutls-dev", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl4-nss-dev", "binary_version": "7.58.0-2ubuntu3.23" }, { "binary_name": "libcurl4-openssl-dev", "binary_version": "7.58.0-2ubuntu3.23" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "curl", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "curl-dbgsym", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl3-gnutls", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl3-gnutls-dbgsym", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl3-nss", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl3-nss-dbgsym", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl4", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl4-dbgsym", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl4-doc", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl4-gnutls-dev", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl4-nss-dev", "binary_version": "7.68.0-1ubuntu2.16" }, { "binary_name": "libcurl4-openssl-dev", "binary_version": "7.68.0-1ubuntu2.16" } ] }
{ "availability": "No subscription required", "binaries": [ { "binary_name": "curl", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "curl-dbgsym", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl3-gnutls", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl3-gnutls-dbgsym", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl3-nss", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl3-nss-dbgsym", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl4", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl4-dbgsym", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl4-doc", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl4-gnutls-dev", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl4-nss-dev", "binary_version": "7.81.0-1ubuntu1.8" }, { "binary_name": "libcurl4-openssl-dev", "binary_version": "7.81.0-1ubuntu1.8" } ] }