Ubuntu Security Notice 3339-2 - USN-3339-1 fixed several issues in OpenVPN. This update provides the corresponding update for Ubuntu 12.04 ESM. A Guido Vranken discovered that OpenVPN incorrectly handled an HTTP A proxy with NTLM authentication. A remote attacker could use this issue A to cause OpenVPN clients to crash, resulting in a denial of service, A or possibly expose sensitive memory contents. Various other issues were also addressed.
641ac152ac3ba505d9a7362ea8e3560555245dddfbb68bb739fa139421132dbfDebian Linux Security Advisory 3900-1 - Several issues were discovered in openvpn, a virtual private network application.
bf8347ff66079df80932f331596ee3113b769a47ba519e3bc4dca3d7a34bc4e6Ubuntu Security Notice 3339-1 - Karthikeyan Bhargavan and Gaetan Leurent discovered that 64-bit block ciphers are vulnerable to a birthday attack. A remote attacker could possibly use this issue to recover cleartext data. Fixing this issue requires a configuration change to switch to a different cipher. This update adds a warning to the log file when a 64-bit block cipher is in use. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. It was discovered that OpenVPN incorrectly handled rollover of packet ids. An authenticated remote attacker could use this issue to cause OpenVPN to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. Various other issues were also addressed.
18a5c77511e3ae26a7bfae4c9431f20c33fd11ad212e06d8a50e2ce03e855ef6Slackware Security Advisory - New openvpn packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.
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