golang: crypto/elliptic: panic caused by oversized scalar

An integer overflow flaw was found in Golang's crypto/elliptic library. This flaw allows an attacker to use a crafted scaler input longer than 32 bytes, causing P256.ScalarMult or P256.ScalarBaseMult to panic, leading to a loss of availability...

golang: crypto/elliptic: IsOnCurve returns true for invalid field elements

A flaw was found in the elliptic package of the crypto library in golang when the IsOnCurve function could return true for invalid field elements. This flaw allows an attacker to take advantage of this undefined behavior, affecting the availability and integrity of the resource...

USN-5546-2 openjdk-8 vulnerabilities

USN-5546-1 fixed vulnerabilities in OpenJDK. This update provides the corresponding updates for Ubuntu 16.04 ESM. Original advisory details: Neil Madden discovered that OpenJDK did not properly verify ECDSA signatures. A remote attacker could possibly use this issue to insert, edit or obtain...

A Wide Reduction Trick

In line with the original spirit of Cryptography Dispatches, this is a quick1 issue to talk about a neat bit of cryptography engineering I encountered. The structure of an ECC implementation Elliptic curve cryptography implementations all roughly share the following structure: theres a base field...

golang: crypto/elliptic: panic caused by oversized scalar

An integer overflow flaw was found in Golang's crypto/elliptic library. This flaw allows an attacker to use a crafted scaler input longer than 32 bytes, causing P256.ScalarMult or P256.ScalarBaseMult to panic, leading to a loss of availability...

golang: crypto/elliptic: panic caused by oversized scalar

An integer overflow flaw was found in Golang's crypto/elliptic library. This flaw allows an attacker to use a crafted scaler input longer than 32 bytes, causing P256.ScalarMult or P256.ScalarBaseMult to panic, leading to a loss of availability...

golang: crypto/elliptic: IsOnCurve returns true for invalid field elements

A flaw was found in the elliptic package of the crypto library in golang when the IsOnCurve function could return true for invalid field elements. This flaw allows an attacker to take advantage of this undefined behavior, affecting the availability and integrity of the resource...

RHEL 9 : go-toolset and golang (RHSA-2022:5799)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2022:5799 advisory. Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. The golang packages provide the Go...

Huawei EulerOS: Security Advisory for openssl (EulerOS-SA-2022-2186)

The remote host is missing an update for the Huawei EulerOS SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Fedora: Security Advisory for golang-github-tscholl2-siec (FEDORA-2022-37aef44d1e)

The remote host is missing an update for the SPDX-FileCopyrightText: 2022 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

[SECURITY] Fedora 36 Update: golang-github-tscholl2-siec-0-4.20211128git9bdfc48.fc36

Super-Isolated Elliptic Curve Implementation in Go...

CVE-2022-23001

When compressing or decompressing elliptic curve points using the Sweet B library, an incorrect choice of sign bit is used. An attacker with user level privileges and no other user's assistance can exploit this vulnerability with only knowledge of the public key and the library. The resulting...

CVE-2022-23001

When compressing or decompressing elliptic curve points using the Sweet B library, an incorrect choice of sign bit is used. An attacker with user level privileges and no other user's assistance can exploit this vulnerability with only knowledge of the public key and the library. The resulting...

CVE-2022-23002

When compressing or decompressing a point on the NIST P-256 elliptic curve with an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output will cause an error when used in other operations. This may be leveraged by an...

CVE-2022-23001

When compressing or decompressing elliptic curve points using the Sweet B library, an incorrect choice of sign bit is used. An attacker with user level privileges and no other user's assistance can exploit this vulnerability with only knowledge of the public key and the library. The resulting...

CVE-2022-23002

When compressing or decompressing a point on the NIST P-256 elliptic curve with an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output will cause an error when used in other operations. This may be leveraged by an...

CVE-2022-23002

When compressing or decompressing a point on the NIST P-256 elliptic curve with an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output will cause an error when used in other operations. This may be leveraged by an...

CVE-2022-23003

When computing a shared secret or point multiplication on the NIST P-256 curve that results in an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output may cause an error when used in other operations. This may be...

Code injection

When compressing or decompressing elliptic curve points using the Sweet B library, an incorrect choice of sign bit is used. An attacker with user level privileges and no other user's assistance can exploit this vulnerability with only knowledge of the public key and the library. The resulting...

Code injection

When compressing or decompressing a point on the NIST P-256 elliptic curve with an X coordinate of zero, the resulting output is not properly reduced modulo the P-256 field prime and is invalid. The resulting output will cause an error when used in other operations. This may be leveraged by an...