CPANSA-Alien-GCrypt-2018-0495-libgcrypt: Alien-GCrypt vulnerability

Publisher giterlizzi Document category csaf_security_advisory
Initial release date 2018-06-13T00:00:00 Engine CSAF Perl Toolkit 0.26
Current release date 2018-06-13T00:00:00 Build Date
Current version 1 Status final
CVSS v3.1 Base Score 4.7 Severity Medium
Original language Language en
Also referred to

Vulnerability Description

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Vulnerabilities

CVE-2018-0495

Vulnerability Description

Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.

Weakness CWE-203 : Observable Discrepancy

Product status

Known affected
Product Score
Alien-GCrypt greater than or equal 1.6.2.0 and less than or equal 1.6.2.1
CVSS Version CVSS Vector CVSS Base Score CVSS Base Severity
3.0 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N 4.7 Medium
2.0 AV:L/AC:M/Au:N/C:P/I:N/A:N 1.9 Low

giterlizzi

Namespace: https://github.com/giterlizzi/

gdt@cpan.org

References

Revision history

Version Date of the revision Summary of the revision
1 Wed Jun 13 00:00:00 2018 First release

Sharing rules

TLP:WHITE
For the TLP version see: https://www.first.org/tlp/