CVE-2017-7526
Google Libgcrypt RSA Cache Side-Channel Attack
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.
INFO
Published Date :
July 26, 2018, 1:29 p.m.
Last Modified :
Nov. 7, 2023, 2:50 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
2.2
Public PoC/Exploit Available at Github
CVE-2017-7526 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2017-7526
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-7526.
| URL | 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%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=8725c99ffa41778f382ca97233183bcd687bb0ce | |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=e6a3dc9900433bbc8ad362a595a3837318c28fa9 | |
| 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Map Vulnerabilities into Different Layers of the Container Image
Python
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-7526 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-7526 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Added Reference Red Hat, Inc. https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a [No types assigned] Added Reference Red Hat, Inc. https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=e6a3dc9900433bbc8ad362a595a3837318c28fa9 [No types assigned] Added Reference Red Hat, Inc. https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=8725c99ffa41778f382ca97233183bcd687bb0ce [No types assigned] Removed Reference Red Hat, Inc. https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=e6a3dc9900433bbc8ad362a595a3837318c28fa9 Removed Reference Red Hat, Inc. https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8725c99ffa41778f382ca97233183bcd687bb0ce Removed Reference Red Hat, Inc. https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=78130828e9a140a9de4dafadbc844dbb64cb709a -
CVE Modified by [email protected]
Oct. 09, 2019
Action Type Old Value New Value Added CVSS V3 Red Hat, Inc. AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N Added CWE Red Hat, Inc. CWE-200 -
Initial Analysis by [email protected]
Oct. 02, 2018
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:N/A:N) Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N Changed Reference Type https://usn.ubuntu.com/3733-1/ No Types Assigned https://usn.ubuntu.com/3733-1/ Third Party Advisory Changed Reference Type https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=78130828e9a140a9de4dafadbc844dbb64cb709a No Types Assigned https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=78130828e9a140a9de4dafadbc844dbb64cb709a Patch, Vendor Advisory Changed Reference Type https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=e6a3dc9900433bbc8ad362a595a3837318c28fa9 No Types Assigned https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=e6a3dc9900433bbc8ad362a595a3837318c28fa9 Patch, Vendor Advisory Changed Reference Type https://usn.ubuntu.com/3733-2/ No Types Assigned https://usn.ubuntu.com/3733-2/ Third Party Advisory Changed Reference Type https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html No Types Assigned https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html Mailing List, Vendor Advisory Changed Reference Type http://www.securityfocus.com/bid/99338 No Types Assigned http://www.securityfocus.com/bid/99338 Third Party Advisory, VDB Entry Changed Reference Type https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8725c99ffa41778f382ca97233183bcd687bb0ce No Types Assigned https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=8725c99ffa41778f382ca97233183bcd687bb0ce Patch, Vendor Advisory Changed Reference Type https://www.debian.org/security/2017/dsa-3960 No Types Assigned https://www.debian.org/security/2017/dsa-3960 Third Party Advisory Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526 Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://www.debian.org/security/2017/dsa-3901 No Types Assigned https://www.debian.org/security/2017/dsa-3901 Third Party Advisory Changed Reference Type http://www.securitytracker.com/id/1038915 No Types Assigned http://www.securitytracker.com/id/1038915 Third Party Advisory, VDB Entry Changed Reference Type https://eprint.iacr.org/2017/627 No Types Assigned https://eprint.iacr.org/2017/627 Third Party Advisory Added CWE CWE-310 Added CPE Configuration OR *cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:* versions up to (excluding) 1.7.8 Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Aug. 16, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3733-2/ [No Types Assigned] -
CVE Modified by [email protected]
Aug. 08, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3733-1/ [No Types Assigned] -
CVE Modified by [email protected]
Jul. 28, 2018
Action Type Old Value New Value Added Reference https://www.debian.org/security/2017/dsa-3960 [No Types Assigned] Added Reference https://www.debian.org/security/2017/dsa-3901 [No Types Assigned] Added Reference http://www.securitytracker.com/id/1038915 [No Types Assigned] Added Reference http://www.securityfocus.com/bid/99338 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 27, 2018
Action Type Old Value New Value Changed Description libgcrypt before version 1.7.8 is vulnerable to a to 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. 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.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-7526 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-7526
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.27 }} -0.11%
score
0.68555
percentile