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GLSA
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Joined: 12 May 2004
Posts: 2308

PostPosted: Mon Mar 16, 2020 12:26 am    Post subject: [ GLSA 202003-32 ] Libgcrypt Reply with quote

Gentoo Linux Security Advisory

Title: Libgcrypt: Side-channel attack (GLSA 202003-32)
Severity: low
Exploitable: local
Date: 2020-03-15
Bug(s): #693108
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: dev-libs/libgcrypt
Vulnerable: < 1.8.5
Unaffected: >= 1.8.5
Architectures: 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:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/libgcrypt-1.8.5"
   


References

CVE-2019-13627
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