- Update to 3.4.1 release
* Fix CVE-2018-16869 (bsc#1118086)
All functions using RSA private keys are now side-channel
silent, meaning that they try hard to avoid any branches or
memory accesses depending on secret data. This applies both to
the bignum calculations, which now use GMP's mpn_sec_* family
of functions, and the processing of PKCS#1 padding needed for
RSA decryption.
* Changes in behavior:
The functions rsa_decrypt and rsa_decrypt_tr may now clobber
all of the provided message buffer, independent of the
actual message length. They are side-channel silent, in that
branches and memory accesses don't depend on the validity or
length of the message. Side-channel leakage from the
caller's use of length and return value may still provide an
oracle useable for a Bleichenbacher-style chosen ciphertext
attack. Which is why the new function rsa_sec_decrypt is
recommended.
* New features:
A new function rsa_sec_decrypt.
* Bug fixes:
- Fix bug in pkcs1-conv, missing break statements in the
parsing of PEM input files.
- Fix link error on the pss-mgf1-test test, affecting builds
without public key support.
OBS-URL: https://build.opensuse.org/request/show/662469
OBS-URL: https://build.opensuse.org/package/show/security:tls/libnettle?expand=0&rev=5
