[ubuntu/xenial-security] libgcrypt20 1.6.5-2ubuntu0.3 (Accepted)

[Marc Deslauriers]

libgcrypt20 (1.6.5-2ubuntu0.3) xenial-security; urgency=medium

  * SECURITY UPDATE: full RSA key recovery via side-channel attack
    - debian/patches/CVE-2017-7526-1.patch: simplify loop in mpi/mpi-pow.c.
    - debian/patches/CVE-2017-7526-2.patch: use same computation for square
      and multiply in mpi/mpi-pow.c.
    - debian/patches/CVE-2017-7526-3.patch: add exponent blinding in
      cipher/rsa.c.
    - debian/patches/CVE-2017-7526-4.patch: add free to cipher/rsa.c.
    - debian/patches/CVE-2017-7526-5.patch: add free to cipher/rsa.c.
    - CVE-2017-7526
  * SECURITY UPDATE: EdDSA key recovery via side-channel attack
    - debian/patches/CVE-2017-9526-1.patch: store EdDSA session key in
      secure memory in cipher/ecc-eddsa.c.
    - debian/patches/CVE-2017-9526-2.patch: fix SEGV and stat calculation
      src/secmem.c.
    - CVE-2017-9526

Date: 2017-07-03 13:15:18.745592+00:00
Changed-By: Marc Deslauriers <marc.deslauriers at canonical.com>
https://launchpad.net/ubuntu/+source/libgcrypt20/1.6.5-2ubuntu0.3
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