Guido Vranken discovered an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. For the oldstable distribution (stretch), this problem has been fixed in version 1.0.2u-1~deb9u1. We recommend that you upgrade your openssl1.0 packages. For the detailed security status of openssl1.0 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openssl1.0
Guido Vranken discovered an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli.
For the oldstable distribution (stretch), this problem has been fixed in version 1.0.2u-1~deb9u1.
We recommend that you upgrade your openssl1.0 packages.
For the detailed security status of openssl1.0 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openssl1.0