-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3626-1 security@xxxxxxxxxx https://www.debian.org/security/ Salvatore Bonaccorso July 24, 2016 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : openssh CVE ID : CVE-2016-6210 Debian Bug : 831902 Eddie Harari reported that the OpenSSH SSH daemon allows user enumeration through timing differences when trying to authenticate users. When sshd tries to authenticate a non-existing user, it will pick up a fixed fake password structure with a hash based on the Blowfish algorithm. If real users passwords are hashed using SHA256/SHA512, then a remote attacker can take advantage of this flaw by sending large passwords, receiving shorter response times from the server for non-existing users. For the stable distribution (jessie), this problem has been fixed in version 1:6.7p1-5+deb8u3. For the unstable distribution (sid), this problem has been fixed in version 1:7.2p2-6. We recommend that you upgrade your openssh packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBCgAGBQJXlISdAAoJEAVMuPMTQ89E50EP/2IZzNstrspvhIJzWiJ0XJpA GHzRSK0tbMZEfolYBwPQ6Z8G7hWeBnP0sQIsCjuSbmasvjdKgOLDL90ffrsPnb2/ hHnP7SOERXHGSXmgB9/7hWQtjtxS9mDw703H9XI73Rb3DF8aVrPYUGvQb8/hIh4F Cb/TX2rmPTievw+JWAhkwxa5yEwqrl7J2yARtwraeNujoXvOyZpogNcoQ4HkKQtG X+nktjcs6Y8rETTNJzOAeo9HlPRDnxVaHmjN47DXk2IqpyJWYWEOX/rlvAIRKkFH M5xtciU3POVnMqE/CYsqJFmlo0QpQI+LYFTjd6gs0bd3TN71SpV+kg36U+ujG5kk EACgrpWKBnWdUzwYk7Ur2hj95UgXHjQDeZM69WIg9a+OemW9op9ZuYx+umb38+zd bJnMwjvF5uzQGwyM3Nk91EjZYmxKLlv0CO1MCUBaF5Re7b6Ki2wLUmlMmGDGPRS3 Q8NFeRO9ycpFkkqaVvYkiyrTkPquBaH2MG5HUMOnBwMtg4ksTgHxIGWh975EnLTh TealNc9LFwG3YHJw+rqTmm/YAVNJgoFR7J4mu3s381TSBhU28ZhtR9EJq5wls9gd Ughr9rcdp0pv4RNugkWx7IxsB+tt3DXHR6fR1urCg1vu7Sc4tXGTGc+0zl9MVIe6 JAuXfU6yrbxD4t4dBq9D =0fAi -----END PGP SIGNATURE-----
