GLSA 202003-32: Libgcrypt: Side-channel attack
| Severity: | low |
| Title: | Libgcrypt: Side-channel attack |
| Date: | 03/15/2020 |
| Bugs: | |
| ID: | 202003-32 |
Synopsis
A vulnerability in Libgcrypt could allow a local attacker to recover sensitive information.Background
Libgcrypt is a general purpose cryptographic library derived out of GnuPG.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| dev-libs/libgcrypt | < 1.8.5 | >= 1.8.5 | All supported architectures |
Description
A timing attack was found in the way ECCDSA was implemented in Libgcrypt.
Impact
A local man-in-the-middle attacker, during signature generation, could possibly recover the private key.
Workaround
There is no known workaround at this time.
Resolution
All Libgcrypt users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/libgcrypt-1.8.5"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
Concerns?
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license.