CVE-2015-7511

Severity: low (CVSS 2.0 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-04-19 · updated 2026-06-17
Weakness: CWE-200

Description

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.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.10
Debian Linux: 7.0, 8.0
gnupg Libgcrypt: through 1.6.4

References

http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html
http://www.cs.tau.ac.IL/~tromer/ecdh/
http://www.debian.org/security/2016/dsa-3474
http://www.debian.org/security/2016/dsa-3478
http://www.securityfocus.com/bid/83253
http://www.ubuntu.com/usn/USN-2896-1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html
https://security.gentoo.org/glsa/201610-04
http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.html
http://www.cs.tau.ac.IL/~tromer/ecdh/
http://www.debian.org/security/2016/dsa-3474

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