GnuPG 1.x before 1.4.16 generates RSA keys using sequences of introductions
with certain patterns that introduce a side channel, which allows physically
proximate attackers to extract RSA keys via a chosen-ciphertext attack and
acoustic cryptanalysis during decryption. NOTE: applications are not typically
expected to protect themselves from acoustic side-channel attacks, since this
is arguably the responsibility of the physical device. Accordingly, issues of
this type would not normally receive a CVE identifier. However, for this
issue, the developer has specified a security policy in which GnuPG should
offer side-channel resistance, and developer-specified security-policy
violations are within the scope of CVE.
