National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-7526 Detail

Current 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.

Source:  MITRE
Description Last Modified:  07/26/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.8 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N (V3 legend)
Impact Score: 4.0
Exploitability Score: 2.2


Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/99338 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1038915 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 Issue Tracking Patch Third Party Advisory
https://eprint.iacr.org/2017/627 Third Party Advisory
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=78130828e9a140a9de4dafadbc844dbb64cb709a Patch Vendor Advisory
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8725c99ffa41778f382ca97233183bcd687bb0ce Patch Vendor Advisory
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=e6a3dc9900433bbc8ad362a595a3837318c28fa9 Patch Vendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html Mailing List Vendor Advisory
https://usn.ubuntu.com/3733-1/ Third Party Advisory
https://usn.ubuntu.com/3733-2/ Third Party Advisory
https://www.debian.org/security/2017/dsa-3901 Third Party Advisory
https://www.debian.org/security/2017/dsa-3960 Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7526
NVD Published Date:
07/26/2018
NVD Last Modified:
10/02/2018