CVE-2015-0837

MEDIUM

Description

The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."

References

http://www.debian.org/security/2015/dsa-3184

http://www.debian.org/security/2015/dsa-3185

https://ieeexplore.ieee.org/document/7163050

https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html

https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.html

Details

Source: MITRE

Published: 2019-11-29

Updated: 2019-12-14

Type: CWE-203

Risk Information

CVSS v2.0

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 5.9

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM