openssl: timing attack in RSA Decryption implementation

A timing-based side channel exists in the OpenSSL RSA Decryption implementation, which could be sufficient to recover a ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption, an attacker would have to be able to send a very large number of trial messages...

Ubuntu 20.04 LTS / 22.04 LTS : GnuTLS vulnerability (USN-5901-1)

The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-5901-1 advisory. Hubert Kario discovered that GnuTLS had a timing side-channel when handling certain RSA messages. A remote attacker could possibly use this issue to...

AlmaLinux 9 : openssl (ALSA-2023:0946)

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2023:0946 advisory. - A read buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after...

Fedora 37 : gnutls / guile-gnutls (2023-1c4a6a47ae)

The remote Fedora 37 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2023-1c4a6a47ae advisory. Release of gnutls 3.8.0 fixes CVE-2023-0361 Release of gnutls guile bingings as standalone package. Tenable has extracted the preceding description block...

OESA-2023-1126 gnutls security update

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface API to access the secure communications protocols as well as APIs to parse and write X.509, PKCS 12, and other...

SUSE SLED15: gnutls / gnutls-guile / libgnutls-devel / libgnutls-devel-32bit / etc (SUSE-SU-2023:0475-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2023:0475-1 advisory. - CVE-2023-0361: Fixed a Bleichenbacher oracle in the TLS RSA key exchange bsc1208143. - FIPS: Make the...

Fedora 36 : openssl (2023-a5564c0a3f)

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2023-a5564c0a3f advisory. Rebase to upstream version 3.0.8 Resolves: CVE-2022-4203 Resolves: CVE-2022-4304 Resolves: CVE-2022-4450 Resolves: CVE-2023-0215 Resolves:...

K10281096: TLS in Mozilla NSS vulnerability CVE-2018-12404

Security Advisory Description A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content. This is a variant of the Adaptive Chosen Ciphertext attack AKA Bleichenbacher attack and affects all NSS versions prior to NSS 3.41. CVE-2018-1240...

K97324400: OpenSSL vulnerability CVE-2019-1563

Security Advisory Description In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypt...

K95463126: OpenSSL vulnerabilities CVE-2016-0703 and CVE-2016-0704

Security Advisory Description CVE-2016-0703 The getclientmasterkey function in s2srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, whic...

K41192923: Intel CPU vulnerability CVE-2018-3616

Security Advisory Description Bleichenbacher-style side channel vulnerability in TLS implementation in Intel Active Management Technology before 12.0.5 may allow an unauthenticated user to potentially obtain the TLS session key via the network. CVE-2018-3616 Impact There is no impact; F5 products...

K54039800: MatrixSSL vulnerability CVE-2016-6883

Security Advisory Description MatrixSSL before 3.8.3 configured with RSA Cipher Suites allows remote attackers to obtain sensitive information via a Bleichenbacher variant attack. CVE-2016-6883 Impact There is no impact; F5 products are not affected by this vulnerability. Security Advisory Status...

K05909237: BouncyCastle Java crypto vulnerability CVE-2017-13098

Security Advisory Description BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE Java Cryptography Extension for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private...

OESA-2023-1107 openssl security update

Security Fixes: The public API function BIOnewNDEF is a helper function used for streaming ASN.1 data via a BIO. It is primarily used internally to OpenSSL to support the SMIME, CMS and PKCS7 streaming capabilities, but may also be called directly by end user applications. The function receives a...

CVE-2023-0361

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Debian dla-3321 : gnutls-bin - security update

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3321 advisory. ------------------------------------------------------------------------- Debian LTS Advisory DLA-3321-1 [email protected] https://www.debian.org/lts/security/...

CVE-2023-0361

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to...

DEBIAN-CVE-2023-0361

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to...

ALPINE-CVE-2023-0361

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to...

AZL-13568 CVE-2023-0361 affecting package gnutls for versions less than 3.7.7-2

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to...