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Fencer Intel
low 2.0

CVE-2015-7511 json

Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physicall…

published 10y ago modified 4mo ago also EUVD-2015-7432

cvss
2.0
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 37%
public exploits
0
none known

Summary

Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.

Patch / fix

  • libgcrypt20 Debian 14, Debian 13, Debian 12 1.6.5-2

debian advisories DEBIAN-CVE-2015-7511

  • libgcrypt11 Ubuntu 14.04 LTS 1.5.3-2ubuntu4.3

ubuntu advisories UBUNTU-CVE-2015-7511

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libgcrypt SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +5 more 1.6.1-16.27.1

suse advisories SUSE-SU-2016:1089-1

  • libgcrypt openSUSE Tumbleweed 1.7.3-1.3

opensuse advisories openSUSE-SU-2024:10037-1

Is CVE-2015-7511 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-7511 updated cvss 1.8

libgcrypt: side-channel attack on ECDH with Weierstrass curves

  • Red Hat Enterprise Linux 5 libgcrypt Red Hat Enterprise Linux 6 libgcrypt Red Hat Enterprise Linux 7 libgcrypt
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.43% chance of exploitation in the next 30 days, higher than 37% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 2.0 CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 1.9 AV:L/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.