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FreeBSD: (Multiple Advisories) (CVE-2017-7526): gnupg -- unsanitized output (CVE-2018-12020)

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FreeBSD: (Multiple Advisories) (CVE-2017-7526): gnupg -- unsanitized output (CVE-2018-12020)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
06/29/2017
Created
07/25/2018
Added
07/01/2017
Modified
05/07/2019

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.

Solution(s)

  • freebsd-upgrade-package-gnupg
  • freebsd-upgrade-package-gnupg1
  • freebsd-upgrade-package-libgcrypt

References

  • USN-3347-1
  • USN-3347-2
  • USN-3733-1
  • USN-3733-2
  • DSA-3901
  • DSA-3960
  • CVE-2017-7526
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