CLSA-2023-1700593531 Fix CVE(s): CVE-2023-3446

SECURITY UPDATE: Denial of service could be encountered if a DH key or DH parameters check experience long delays. - debian/patches/CVE-2023-3446.patch: Adds check to prevent the testing of an excessively large modulus in DHcheck. - CVE-2023-3446...

USN-6488-1 strongswan vulnerability

Florian Picca discovered that strongSwan incorrectly handled certain DH public values. A remote attacker could use this issue to cause strongSwan to crash, resulting in a denial of service, or possibly execute arbitrary code...

UBUNTU-CVE-2023-41913

strongSwan before 5.9.12 has a buffer overflow and possible unauthenticated remote code execution via a DH public value that exceeds the internal buffer in charon-tkm's DH proxy. The earliest affected version is 5.3.0. An attack can occur via a crafted IKESAINIT message...

Excessive time spent in DH check / generation with large Q parameter value

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SUSE CVE-2023-5678

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

AZL-31880 CVE-2023-5678 affecting package openssl for versions less than 1.1.1k-28

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

AZL-42736 CVE-2023-5678 affecting package cloud-hypervisor-cvm for versions less than 38.0.72.2-1

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

ALPINE-CVE-2023-5678

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

AZL-35084 CVE-2023-5678 affecting package openssl for versions less than 1.1.1k-28

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

DEBIAN-CVE-2023-5678

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

AZL-34666 CVE-2023-5678 affecting package edk2 for versions less than 20230301gitf80f052277c8-38

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

AZL-39659 CVE-2023-5678 affecting package kata-containers for versions less than 3.2.0.azl1-1

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

AZL-78555 CVE-2023-5678 affecting package openssl-fips-provider 3.1.2-1

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

UBUNTU-CVE-2023-5678

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

CVE-2023-5678 Excessive time spent in DH check / generation with large Q parameter value

Issue summary: Generating excessively long X9.42 DH keys or checking excessively long X9.42 DH keys or parameters may be very slow. Impact summary: Applications that use the functions DHgeneratekey to generate an X9.42 DH key may experience long delays. Likewise, applications that use...

OpenSSL Code Issue Vulnerability

OpenSSL is an open source capable general-purpose cryptographic library from the OpenSSL team that implements the Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. It supports a variety of cryptographic algorithms, including symmetric ciphers, hashing algorithms, secure...

USN-6435-2 openssl vulnerabilities

USN-6435-1 fixed vulnerabilities in OpenSSL. This update provides the corresponding updates for Ubuntu 20.04 LTS. Original advisory details: It was discovered that OpenSSL incorrectly handled excessively large Diffie-Hellman parameters. An attacker could possibly use this issue to cause a denial ...

USN-6435-2: OpenSSL vulnerabilities

USN-6435-1 fixed vulnerabilities in OpenSSL. This update provides the corresponding updates for Ubuntu 20.04 LTS. Original advisory details: It was discovered that OpenSSL incorrectly handled excessively large Diffie-Hellman parameters. An attacker could possibly use this issue to cause a denial ...

Why We Don’t Generate Elliptic Curves Every Day

With all the talk recently of how the NIST curve parameters were selected, a reasonable observer could wonder why we all use the same curves instead of generating them along with keys, like we do for Diffie-Hellman parameters. You might have memories of waiting around for openssl dhparam to run a...

OpenSSL: Excessive time spent checking DH q parameter value

A vulnerability was found in OpenSSL. This security issue occurs because the applications that use the DHcheck, DHcheckex, or EVPPKEYparamcheck functions to check a DH key or DH parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an...