Multiple denial of service vulnerabilities have been discovered in Nettle.
| Package | Arch | Vulnerable | Unaffected |
|---|---|---|---|
| dev-libs/nettle | * | < 3.9.1 | >= 3.9.1 |
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.
Multiple vulnerabilities have been discovered in Nettle. Please review the CVE identifiers referenced below for details.
A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to provide a manipulated ciphertext leading to application crash and denial of service.
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-3.9.1"
A vulnerability in Nettle could lead to a Denial of Service condition.
| Package | Arch | Vulnerable | Unaffected |
|---|---|---|---|
| dev-libs/nettle | * | < 3.7.2 | >= 3.7.2 |
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.
It was discovered that Nettle incorrectly handled signature verification.
A remote attacker could send a specially crafted valid-looking input signature, possibly resulting in a Denial of Service condition or force an invalid signature.
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-3.7.2"
A cache-related side channel vulnerability was found in nettle which might allow an attacker to obtain sensitive information.
| Package | Arch | Vulnerable | Unaffected |
|---|---|---|---|
| dev-libs/nettle | * | < 3.2-r1 | >= 3.2-r1 |
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.
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 virtual-machine instance.
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"