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OpenSSL 1.0.2 < 1.0.2k Multiple Vulnerabilities



The remote web server is running an outdated instance of OpenSSL and is affected by multiple attack vectors.


According to its banner, the version of OpenSSL on the remote host is version 1.0.2 prior to 1.0.2k and is affected by multiple vulnerabilities :

- An out-of-bounds read flaw exists in 'crypto/evp/e_chacha20_poly1305.c' that is triggered during the handling of packets when using the CHACHA20/POLY1305 cipher. This may allow a remote attacker to crash a process linked against the library. (CVE-2017-3731) - A carry propagating flaw exists in the Montgomery squaring procedure in 'crypto/bn/asm/x86_64-mont5.pl'. This may cause 'BN_mod_exp' to produce incorrect results, which may potentially allow an attacker to derive information regarding private keys. (CVE-2017-3732)


Upgrade OpenSSL to version 1.0.2k or higher