Information disclosure in Libgcrypt - CVE-2017-0379
Published: August 30, 2017 / Updated: July 28, 2020
Vulnerability identifier: #VU32070
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2017-0379
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
Libgcrypt
Libgcrypt
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c.
How to mitigate CVE-2017-0379
Install update from vendor's website.
Sources
- http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
- http://www.securityfocus.com/bid/100503
- http://www.securitytracker.com/id/1041294
- https://bugs.debian.org/873383
- https://eprint.iacr.org/2017/806
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git;a=commit;h=da780c8183cccc8f533c8ace8211ac2cb2bdee7b
- https://lists.debian.org/debian-security-announce/2017/msg00221.html
- https://security.netapp.com/advisory/ntap-20180726-0002/
- https://security-tracker.debian.org/tracker/CVE-2017-0379
- https://www.debian.org/security/2017/dsa-3959
- https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html