Ubuntu Security Notice 2591-1 - Paras Sethia discovered that curl could incorrectly re-use NTLM HTTP credentials when subsequently connecting to the same host over HTTP. Hanno B=C3=B6ck discovered that curl incorrectly handled zero-length host names. If a user or automated system were tricked into using a specially crafted host name, an attacker could possibly use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.10 and Ubuntu 15.04. Various other issues were also addressed.
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Debian Linux Security Advisory 3240-1 - It was discovered that cURL, an URL transfer library, if configured to use a proxy server with the HTTPS protocol, by default could send to the proxy the same HTTP headers it sends to the destination server, possibly leaking sensitive information.
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