The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a “Last-Level Cache Side-Channel Attack.”
[
{
"product": "Libgcrypt",
"vendor": "GNU",
"versions": [
{
"status": "affected",
"version": "before 1.6.3"
}
]
},
{
"product": "GnuPG",
"vendor": "GNU",
"versions": [
{
"status": "affected",
"version": "before 1.4.19"
}
]
}
]