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CVE-2017-7526

Status Candidate

Overview

libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.

Related Files

Ubuntu Security Notice USN-3733-2
Posted Aug 16, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3733-2 - USN-3733-1 fixed a vulnerability in GnuPG. This update provides the corresponding update for Ubuntu 12.04 ESM. Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that GnuPG is vulnerable to a cache side- channel attack. A local attacker could use this attack to recover RSA private keys. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2017-7526
MD5 | fe19ad438a707deec7536790c1f1f042
Ubuntu Security Notice USN-3733-1
Posted Aug 7, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3733-1 - Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that GnuPG is vulnerable to a cache side-channel attack. A local attacker could use this attack to recover RSA private keys.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2017-7526
MD5 | 1e04040a0f99386a8b56262eec323ea2
Slackware Security Advisory - gnupg Updates
Posted Aug 3, 2017
Authored by Slackware Security Team | Site slackware.com

Slackware Security Advisory - New gnupg packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix a security issue.

tags | advisory
systems | linux, slackware
advisories | CVE-2017-7526
MD5 | 4caa75ea2ec51b16d20510989f5b4c0a
Ubuntu Security Notice USN-3347-2
Posted Jul 17, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3347-2 - USN-3347-1 fixed a vulnerability in Libgcrypt. This update provides the corresponding update for Ubuntu 12.04 ESM. A Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot A Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and A Yuval Yarom discovered that Libgcrypt was susceptible to an attack via A side channels. A local attacker could use this attack to recover RSA A private keys. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2017-7526
MD5 | fd750c8da9a13d230bb2725580662c1d
Ubuntu Security Notice USN-3347-1
Posted Jul 3, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3347-1 - Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom discovered that Libgcrypt was susceptible to an attack via side channels. A local attacker could use this attack to recover RSA private keys. It was discovered that Libgcrypt was susceptible to an attack via side channels. A local attacker could use this attack to possibly recover EdDSA private keys. This issue only applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. Various other issues were also addressed.

tags | advisory, local
systems | linux, ubuntu
advisories | CVE-2017-7526, CVE-2017-9526
MD5 | f7586c3b8130c5bffe6e14dc9684fda6
Debian Security Advisory 3901-1
Posted Jul 3, 2017
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3901-1 - Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink, Nadia Heninger, Tanja Lange, Christine van Vredendaal and Yuval Yarom discovered that Libgcrypt is prone to a local side-channel attack allowing full key recovery for RSA-1024.

tags | advisory, local
systems | linux, debian
advisories | CVE-2017-7526
MD5 | d658be9eea9c2e1ac845a6372d57d1d4
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