CPANSA-Alien-GCrypt-2017-9526-libgcrypt: Alien-GCrypt vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2017-06-11T00:00:00 Engine CSAF Perl Toolkit 0.26
Current release date 2017-06-11T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score 5.9 Severity Medium
Original language Language en
Also referred to

Vulnerability Description

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

Vulnerabilities

CVE-2017-9526

Vulnerability Description

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

Weakness CWE-200 : Exposure of Sensitive Information to an Unauthorized Actor

Product status

Known affected
Product Score
Alien-GCrypt equal 1.6.5.0
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
3.0 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N 5.9 Medium
2.0 AV:N/AC:M/Au:N/C:P/I:N/A:N 4.3 Medium

giterlizzi

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gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Sun Jun 11 00:00:00 2017 First release

Sharing rules

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