CVE-2017-9526
Acorn Networks Libgcrypt EdDSA Session Key Disclosure
Description
In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.
INFO
Published Date :
June 11, 2017, 2:29 a.m.
Last Modified :
Nov. 7, 2023, 2:50 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
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-2017-9526.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-9526 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-9526 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 MITRE https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=5a22de904a0a366ae79f03ff1e13a1232a89e26b [No types assigned] Added Reference MITRE https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=f9494b3f258e01b6af8bd3941ce436bcc00afc56 [No types assigned] Removed Reference MITRE https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=f9494b3f258e01b6af8bd3941ce436bcc00afc56 Removed Reference MITRE https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=5a22de904a0a366ae79f03ff1e13a1232a89e26b -
CVE Modified by [email protected]
Jan. 16, 2019
Action Type Old Value New Value Added Reference https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html [No Types Assigned] -
CVE Modified by [email protected]
Jul. 19, 2018
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 04, 2017
Action Type Old Value New Value Added Reference http://www.debian.org/security/2017/dsa-3880 [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 22, 2017
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:U/C:H/I:N/A:N Changed Reference Type https://bugzilla.suse.com/show_bug.cgi?id=1042326 No Types Assigned https://bugzilla.suse.com/show_bug.cgi?id=1042326 Issue Tracking, Patch Changed Reference Type https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=5a22de904a0a366ae79f03ff1e13a1232a89e26b No Types Assigned https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=5a22de904a0a366ae79f03ff1e13a1232a89e26b Issue Tracking, Patch, Third Party Advisory Changed Reference Type https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=f9494b3f258e01b6af8bd3941ce436bcc00afc56 No Types Assigned https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=f9494b3f258e01b6af8bd3941ce436bcc00afc56 Issue Tracking, Patch, Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/99046 No Types Assigned http://www.securityfocus.com/bid/99046 Third Party Advisory, VDB Entry Added CWE CWE-200 Added CPE Configuration OR *cpe:2.3:a:gnupg:libgcrypt:1.7.6:*:*:*:*:*:*:* (and previous) -
CVE Modified by [email protected]
Jun. 17, 2017
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/99046 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-9526 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-2017-9526
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.40 }} 0.01%
score
0.70704
percentile