An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPTFTPACCOUNT, CURLOPTFTPALTERNATIVETOUSER, CURLOPTFTPSSLCCC, and CURLOPTUSE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.
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{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "medium", "binaries": [ { "libcurl3": "7.47.0-1ubuntu2.19+esm8", "libcurl4-gnutls-dev": "7.47.0-1ubuntu2.19+esm8", "libcurl3-dbgsym": "7.47.0-1ubuntu2.19+esm8", "libcurl3-nss": "7.47.0-1ubuntu2.19+esm8", "libcurl4-doc": "7.47.0-1ubuntu2.19+esm8", "libcurl3-gnutls-dbgsym": "7.47.0-1ubuntu2.19+esm8", "libcurl4-openssl-dev": "7.47.0-1ubuntu2.19+esm8", "libcurl4-openssl-dev-dbgsym": "7.47.0-1ubuntu2.19+esm8", "curl-dbgsym": "7.47.0-1ubuntu2.19+esm8", "curl": "7.47.0-1ubuntu2.19+esm8", "libcurl4-nss-dev-dbgsym": "7.47.0-1ubuntu2.19+esm8", "libcurl3-gnutls": "7.47.0-1ubuntu2.19+esm8", "libcurl4-gnutls-dev-dbgsym": "7.47.0-1ubuntu2.19+esm8", "libcurl3-nss-dbgsym": "7.47.0-1ubuntu2.19+esm8", "libcurl3-dbg": "7.47.0-1ubuntu2.19+esm8", "libcurl4-nss-dev": "7.47.0-1ubuntu2.19+esm8" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "curl-dbgsym": "7.58.0-2ubuntu3.24", "curl": "7.58.0-2ubuntu3.24", "libcurl4": "7.58.0-2ubuntu3.24", "libcurl4-gnutls-dev": "7.58.0-2ubuntu3.24", "libcurl4-dbgsym": "7.58.0-2ubuntu3.24", "libcurl3-nss": "7.58.0-2ubuntu3.24", "libcurl4-doc": "7.58.0-2ubuntu3.24", "libcurl3-nss-dbgsym": "7.58.0-2ubuntu3.24", "libcurl3-gnutls": "7.58.0-2ubuntu3.24", "libcurl3-gnutls-dbgsym": "7.58.0-2ubuntu3.24", "libcurl4-openssl-dev": "7.58.0-2ubuntu3.24", "libcurl4-nss-dev": "7.58.0-2ubuntu3.24" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "curl-dbgsym": "7.68.0-1ubuntu2.18", "curl": "7.68.0-1ubuntu2.18", "libcurl4": "7.68.0-1ubuntu2.18", "libcurl4-gnutls-dev": "7.68.0-1ubuntu2.18", "libcurl4-dbgsym": "7.68.0-1ubuntu2.18", "libcurl3-nss": "7.68.0-1ubuntu2.18", "libcurl4-doc": "7.68.0-1ubuntu2.18", "libcurl3-nss-dbgsym": "7.68.0-1ubuntu2.18", "libcurl3-gnutls": "7.68.0-1ubuntu2.18", "libcurl3-gnutls-dbgsym": "7.68.0-1ubuntu2.18", "libcurl4-openssl-dev": "7.68.0-1ubuntu2.18", "libcurl4-nss-dev": "7.68.0-1ubuntu2.18" } ] }
{ "availability": "No subscription required", "ubuntu_priority": "medium", "binaries": [ { "curl-dbgsym": "7.81.0-1ubuntu1.10", "curl": "7.81.0-1ubuntu1.10", "libcurl4": "7.81.0-1ubuntu1.10", "libcurl4-gnutls-dev": "7.81.0-1ubuntu1.10", "libcurl4-dbgsym": "7.81.0-1ubuntu1.10", "libcurl3-nss": "7.81.0-1ubuntu1.10", "libcurl4-doc": "7.81.0-1ubuntu1.10", "libcurl3-nss-dbgsym": "7.81.0-1ubuntu1.10", "libcurl3-gnutls": "7.81.0-1ubuntu1.10", "libcurl3-gnutls-dbgsym": "7.81.0-1ubuntu1.10", "libcurl4-openssl-dev": "7.81.0-1ubuntu1.10", "libcurl4-nss-dev": "7.81.0-1ubuntu1.10" } ] }