CVE-2017-7526
- State
- Published
- Severity
- 6.1 Medium
- Published
- Jul 26, 2018
- Updated
- Dec 17, 2025
- Reserved
- Apr 5, 2017
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 6.1 Medium | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N | redhat |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
libgcryptGnuPG |
|
References
- USN-3733-1vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526
- 1038915vdb-entry
- DSA-3960vendor-advisory
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a
- DSA-3901vendor-advisory
- USN-3733-2vendor-advisory
- https://eprint.iacr.org/2017/627
- 99338vdb-entry
- [gnupg-announce] 20170629 Libgcrypt 1.7.8 released to fix CVE-2017-7526mailing-list
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=e6a3dc9900433bbc8ad362a595a3837318c28fa9
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=8725c99ffa41778f382ca97233183bcd687bb0ce
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