{"schemaVersion":3,"id":"CVE-2012-4559","aliases":["DEBIAN-CVE-2012-4559"],"status":"published","duplicateOf":null,"title":null,"description":"Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified 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