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Use of Incorrectly-Resolved Name or Reference Affecting gnupg2 package, versions <2.2.8-1ubuntu1

Severity

 Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    0.43% (75th percentile)

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  • Snyk ID SNYK-UBUNTU1910-GNUPG2-580953
  • published 8 Jun 2018
  • disclosed 8 Jun 2018
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Introduced: 8 Jun 2018

CVE-2018-12020 Open this link in a new tab
CWE-706 Open this link in a new tab

How to fix?

Upgrade Ubuntu:19.10 gnupg2 to version 2.2.8-1ubuntu1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnupg2 package and not the gnupg2 package as distributed by Ubuntu. See How to fix? for Ubuntu:19.10 relevant fixed versions and status.

mainproc.c in GnuPG before 2.2.8 mishandles the original filename during decryption and verification actions, which allows remote attackers to spoof the output that GnuPG sends on file descriptor 2 to other programs that use the "--status-fd 2" option. For example, the OpenPGP data might represent an original filename that contains line feed characters in conjunction with GOODSIG or VALIDSIG status codes.

References

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    High
  • Availability (A)
    None