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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
SHA-256 | 817cfd19cf50cae7760c3417576d5726f44022f1b1c841a3e0a3e23a7fad11f8
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
SHA-256 | 6081868b6937ce04c1afb73d5b0c1cade9750163429be840a37a60165ab52e99
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
SHA-256 | ac7b53ebf1c3f9b75baf51f26cc313718a5582023389ed40e6ad93f7bd09168f
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
SHA-256 | cef9c437283906f956e60f6df98ddc0f810f887f63be10ecd8f7232cf64dd7e6
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
SHA-256 | 99f000f63d5c3d36e35cb45731868ca37158b8a5396e4620eddbafd6657a3cab
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
SHA-256 | f38cd2eb51e615eda4d90e6e35da580f9b63bef09132936eeb26203cba4eb89c
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