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Information Exposure Affecting libgcrypt20 package, versions <1.8.3-1

Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.08% (33rd percentile)

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  • Snyk ID SNYK-DEBIAN12-LIBGCRYPT20-1549909
  • published 13 Jun 2018
  • disclosed 13 Jun 2018
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Introduced: 13 Jun 2018

CVE-2018-0495 Open this link in a new tab
CWE-203 Open this link in a new tab

How to fix?

Upgrade Debian:12 libgcrypt20 to version 1.8.3-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgcrypt20 package and not the libgcrypt20 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

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.

References

CVSS Scores

version 3.1
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Snyk

4.7 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
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NVD

4.7 medium
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SUSE

5.1 medium
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Red Hat

5.1 medium