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1.9
CVSSv2

CVE-2015-7511

Published: 19/04/2016 Updated: 07/11/2023
CVSS v2 Base Score: 1.9 | Impact Score: 2.9 | Exploitability Score: 3.4
CVSS v3 Base Score: 2 | Impact Score: 1.4 | Exploitability Score: 0.5
VMScore: 169
Vector: AV:L/AC:M/Au:N/C:P/I:N/A:N
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Vulnerability Summary

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

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gnupg libgcrypt

debian debian linux 8.0

debian debian linux 7.0

canonical ubuntu linux 12.04

canonical ubuntu linux 15.10

canonical ubuntu linux 14.04

Vendor Advisories

Ubuntu Security Notice: libgcrypt11, libgcrypt20 vulnerability
Libgcrypt could be made to expose sensitive information ...
Debian Security Advisories: DSA-3478-1 libgcrypt11 -- security update
Daniel Genkin, Lev Pachmanov, Itamar Pipman and Eran Tromer discovered that the ECDH secret decryption keys in applications using the libgcrypt11 library could be leaked via a side-channel attack See wwwcstauacIL/~tromer/ecdh/ for details For the oldstable distribution (wheezy), this problem has been fixed in version 150-5+deb7u4 W ...
Red Hat: CVE-2015-7511
Libgcrypt before 165 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 ...

Recent Articles

Stray electronic-magnetic leaks used to harvest PC crypto keys
The Register • John Leyden • 16 Feb 2016

TEMPESTuous

Israeli security researchers have been able to extract encryption keys from a nearby computer by analysing stray electromagnetic radiation. The attack by computer scientists from Tel Aviv University shows that TEMPEST-style side channel attacks are no longer just the preserve of Mission Impossible and three-letter spy agencies. In a paper, titled ECDH Key-Extraction via Low-Bandwidth Electromagnetic Attacks on PCs, the researchers demonstrate how secret decryption keys in applications using the ...

Read more...

References

CWE-200http://www.cs.tau.ac.IL/~tromer/ecdh/http://www.debian.org/security/2016/dsa-3474http://www.ubuntu.com/usn/USN-2896-1https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.htmlhttp://www.debian.org/security/2016/dsa-3478http://www.securityfocus.com/bid/83253http://lists.opensuse.org/opensuse-updates/2016-05/msg00027.htmlhttps://security.gentoo.org/glsa/201610-04https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/https://usn.ubuntu.com/2896-1/https://nvd.nist.gov
CVSSv2
CVSSv2
CVSSv3
VMScore
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