Joined: 12 May 2004
|Posted: Tue Jul 11, 2017 6:26 pm Post subject: [ GLSA 201706-21 ] nettle
|Gentoo Linux Security Advisory
Title: nettle: Information disclosure (GLSA 201706-21)
Exploitable: local, remote
A cache-related side channel vulnerability was found in nettle
which might allow an attacker to obtain sensitive information.
Nettle is a cryptographic library that is designed to fit easily in
almost any context: In cryptographic toolkits for object-oriented
languages, such as C++, Python, or Pike, in applications like lsh or
GnuPG, or even in kernel space.
Vulnerable: < 3.2-r1
Unaffected: >= 3.2-r1
Architectures: All supported architectures
It was found that nettle’s RSA and DSA decryption code was vulnerable
to cache-related side channel attacks.
See the referenced technical paper “Cache Attacks Enable Bulk Key
Recovery on the Cloud” below for details.
An attacker could recover the private key from a co-located
There is no known workaround at this time.
All nettle users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/nettle-3.2-r1"
Cache Attacks Enable Bulk
Key Recovery on the Cloud