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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  6.8 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score:  6.1 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

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 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-310 Cryptographic Issues cwe source acceptance level NIST  
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Reference acceptance level Red Hat, Inc.  

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Change History

6 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7526
NVD Published Date:
07/26/2018
NVD Last Modified:
10/09/2019
Source:
MITRE