CVE-2015-7511: Infoleak
First published: Tue Apr 19 2016(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libgcrypt | <=1.6.4 | |
| Debian Linux | =7.0 | |
| Debian Linux | =8.0 | |
| Ubuntu | =12.04 | |
| Ubuntu | =14.04 | |
| Ubuntu | =15.10 |
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Reference Links
- 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@lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
- https://lists.gnupg.org/pipermail/gnupg-announce/2016q1/000384.html
- https://security.gentoo.org/glsa/201610-04
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W2IL4PAEICHGA2XMQYRY3MIWHM4GMPAG/
Frequently Asked Questions
What is the severity of CVE-2015-7511?
CVE-2015-7511 is classified as a medium severity vulnerability due to its potential for key extraction through electromagnetic emanations.
How do I fix CVE-2015-7511?
To mitigate CVE-2015-7511, upgrade Libgcrypt to version 1.6.5 or later, or apply relevant patches provided by your operating system vendor.
What systems are affected by CVE-2015-7511?
CVE-2015-7511 affects Libgcrypt versions prior to 1.6.5 and various Debian and Ubuntu distributions as specified in the vulnerability report.
What types of attacks does CVE-2015-7511 enable?
CVE-2015-7511 can allow physically proximate attackers to extract elliptic-curve Diffie-Hellman keys through electromagnetic leakage.
Is CVE-2015-7511 specific to any operating system?
CVE-2015-7511 specifically impacts Debian and Ubuntu operating systems that use vulnerable versions of Libgcrypt.
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- agent/references
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- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/event
- agent/first-publish-date
- agent/description
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/gnupg
- canonical/libgcrypt
- version/libgcrypt/1.6.4
- vendor/debian
- canonical/debian linux
- version/debian linux/7.0
- version/debian linux/8.0
- vendor/canonical
- canonical/ubuntu
- version/ubuntu/12.04
- version/ubuntu/14.04
- version/ubuntu/15.10