CVE-2017-7526
Status: ModifiedMedium (6.8)—
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.
CVSS
- Version: 3.0
- Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
- Base score: 6.8
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 3.84%
- Percentile among all scored CVEs: 90
- Score date: 10/2/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
Affected technologies (3)
CWEs
- CWE-200
- CWE-310
References
- http://www.securityfocus.com/bid/99338
- http://www.securitytracker.com/id/1038915
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526
- https://eprint.iacr.org/2017/627
- 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
- https://usn.ubuntu.com/3733-1/
- https://usn.ubuntu.com/3733-2/
- https://www.debian.org/security/2017/dsa-3901
- https://www.debian.org/security/2017/dsa-3960
- http://www.securityfocus.com/bid/99338
- http://www.securitytracker.com/id/1038915
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526
- https://eprint.iacr.org/2017/627
- 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
- https://usn.ubuntu.com/3733-1/
- https://usn.ubuntu.com/3733-2/
- https://www.debian.org/security/2017/dsa-3901
- https://www.debian.org/security/2017/dsa-3960
Raw JSON (NVD)
Show
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