CVEvulnerability

CVE-2017-7526

6.8 MEDIUM Published 2018-07-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-07-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
6.1 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N
CVSS 3.0 ([email protected])
6.8 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
CWE-200, CWE-310

Description

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.

Affected configurations

• gnupg libgcrypt (< 1.7.8) • canonical ubuntu linux 12.04 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • debian debian linux 8.0 • debian debian linux 9.0

Related

Weakness · not in database (1)

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References