Information disclosure in Libgcrypt - CVE-2015-7511
Published: April 20, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32337
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-7511
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Libgcrypt
Libgcrypt
Software vendor:
GNU
GNU
Description
The vulnerability allows a local non-authenticated attacker to gain access to sensitive information.
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.
Remediation
Install update from vendor's website.
External 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