VDB
CVE-2017-9526
CVE-2017-9526
PUBLISHED
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.
EPSS 0.65% · 71.3th percentile
Risk Scores
EPSS Score
0.65%
71.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | libgcrypt20 | 0, 1.6.3-2ubuntu1, 1.6.4-3 |
Exploit Intelligence
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html (circl)
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html (circl)
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=5a22de904a0a366ae79f03ff1e13a1232a89e26b (circl)
- DSA-3880 (circl)
- 99046 (circl)
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=f9494b3f258e01b6af8bd3941ce436bcc00afc56 (circl)
- https://bugzilla.suse.com/show_bug.cgi?id=1042326 (circl)
Timeline
- Jun 10, 2017 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2017-9526 third-party-advisory
- https://ubuntu.com/security/notices/USN-3347-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2017-9526 third-party-advisory