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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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89

Fedora 26 python-crypto Security Advisory: Critical ElGamal Issue

The textbook ElGamal implementation is not secure. PyCrypto and some other implementations use the wrong algorithm, which may lead to some information disclosure simply by looking at the encrypted text. For a full description, see https://github.com/pycrypto/pycrypto/issues/253 This update includes a fix for this problem backported from pycryptodome.. --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2018-0c75cc72bc 2018-03-06 17:26:39.511249 --------------------------------------------------------------------------------Name : python-crypto Product : Fedora 26 Version : 2.6.1 Release : 22.fc26 URL : https://www.pycrypto.org/ Summary : Cryptography library for Python Description : PyCrypto is a collection of both secure hash functions (such as MD5 and SHA), and various encryption algorithms (AES, DES, RSA, ElGamal, etc.). --------------------------------------------------------------------------------Update Information: The textbook ElGamal implementation is not secure. PyCrypto and some other implementations use the wrong algorithm, which may lead to some information disclosure simply by looking at the encrypted text. For a full description, see https://github.com/pycrypto/pycrypto/issues/253 This update includes a fix for this problem backported from pycryptodome. --------------------------------------------------------------------------------References: [ 1 ] Bug #1542313 - CVE-2018-6594 python-crypto: Weak ElGamal key parameters in PublicKey/ElGamal.py allow attackers to obtain sensitive information by reading ciphertext https://bugzilla.redhat.com/show_bug.cgi?id=1542313 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade python-crypto' at the command line. For more information, refer to the dnf documentation availableat https://dnf.readthedocs.io/en/latest/command_ref.html All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/security/ -------------------------------------------------------------------------------- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. . Fedora 26 brings a Python-Crypto enhancement to fix ElGamal algorithm concerns and bolster overall security protocols.. ElGamal Implementation, Python-Crypto, Fedora Security Update, Information Disclosure. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Mar 06, 2018 Critical Fedora
87

Debian 7: DSA-3024-1 Critical: GnuPG Elgamal Side-Channel Attack

Genkin, Pipman and Tromer discovered a side-channel attack on Elgamal encryption subkeys (CVE-2014-5270). In addition, this update hardens GnuPG's behaviour when treating . - ------------------------------------------------------------------------- Debian Security Advisory DSA-3024-1 This email address is being protected from spambots. You need JavaScript enabled to view it. http://www.debian.org/security/ Thijs Kinkhorst September 11, 2014 http://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : gnupg CVE ID : CVE-2014-5270 Debian Bug : 725411 Genkin, Pipman and Tromer discovered a side-channel attack on Elgamal encryption subkeys (CVE-2014-5270). In addition, this update hardens GnuPG's behaviour when treating keyserver responses; GnuPG now filters keyserver responses to only accepts those keyid's actually requested by the user. For the stable distribution (wheezy), this problem has been fixed in version 1.4.12-7+deb7u6. For the testing (jessie) and unstable distribution (sid), this problem has been fixed in version 1.4.18-4. We recommend that you upgrade your gnupg packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . Patch release for OpenSSL countering RSA key leakage. Ensure you update your versions promptly for protection.. GnuPG Update, Debian Security, Side-Channel Attack, Elgamal Encryption. . Severity: Critical. LinuxSecurity.com Team

Calendar 2 Sep 11, 2014 Critical Debian
91

Gentoo Libgcrypt GLSA-201408-10 Normal: ElGamal Key Extraction Risk

A vulnerability in Libgcrypt could allow a remote attacker to extract ElGamal private key information.. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 201408-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - https://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: Libgcrypt: Side-channel attack Date: August 29, 2014 Bugs: #519396 ID: 201408-10 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======= A vulnerability in Libgcrypt could allow a remote attacker to extract ElGamal private key information. Background ========= Libgcrypt is a general purpose cryptographic library derived out of GnuPG. Affected packages ================ ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 dev-libs/libgcrypt < 1.5.4 > = 1.5.4 Description ========== A vulnerability in the implementation of ElGamal decryption procedures of Libgcrypt leaks information to various side-channels. Impact ===== A physical side-channel attack allows a remote attacker to fully extract decryption keys during the decryption of a chosen ciphertext. Workaround ========= There is no known workaround at this time. Resolution ========= All Libgcrypt users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose "> =dev-libs/libgcrypt-1.5.4" References ========= [ 1 ] CVE-2014-5270 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-5270 Availability =========== This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/201408-10 Concerns? ======== Security is a primary focusof Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to This email address is being protected from spambots. You need JavaScript enabled to view it. or alternatively, you may file a bug at https://bugs.gentoo.org. License ====== Copyright 2014 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. https://creativecommons.org/licenses/by-sa/2.5/ . A vulnerability in Libgcrypt allows side-channel attacks to unveil ElGamal keys. It is critical to update to version 1.5.4 or later without delay to ensure system security.. libgcrypt, encryption attack, gentoo advisory, side-channel threat, key extraction issue. . LinuxSecurity.com Team

Calendar 2 Aug 29, 2014 Gentoo
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[{"id":483,"title":"Self-taught through trial and error","votes":545,"type":"x","order":1,"pct":78.42,"resources":[]},{"id":484,"title":"Formal training or courses","votes":30,"type":"x","order":2,"pct":4.32,"resources":[]},{"id":485,"title":"A job that required it","votes":34,"type":"x","order":3,"pct":4.89,"resources":[]},{"id":486,"title":"Other","votes":86,"type":"x","order":4,"pct":12.37,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350
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