GnuPG libgcrypt
At a glance
- Source
- NVD
- EPSS
- EPSS 3.84 % · percentile 90 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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.
Weaknesses (CWE)
References
- https://usn.ubuntu.com/3733-1/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7526
- http://www.securitytracker.com/id/1038915
- https://www.debian.org/security/2017/dsa-3960
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=78130828e9a140a9de4dafadbc844dbb64cb709a
- https://www.debian.org/security/2017/dsa-3901
- https://usn.ubuntu.com/3733-2/
- https://eprint.iacr.org/2017/627
- http://www.securityfocus.com/bid/99338
- https://lists.gnupg.org/pipermail/gnupg-announce/2017q2/000408.html
- 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
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 6.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N | redhat |
| CVSS 3.0 | MEDIUM 6.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.0 | MEDIUM 6.8 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 4.3 | AV:N/AC:M/Au:N/C:P/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2017-16542
- GCVE · GCVE-0-2017-7526
Affected configurations (NVD CPE)
cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*< 1.7.8cpe: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:*:*:*cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| GnuPG · libgcrypt | affected 1.7.8 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |