Marcus Brinkmann discovered that GnuGPG performed insufficient sanitisation of file names displayed in status messages, which could be abused to fake the verification status of a signed email.

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Debian Security Advisory DSA-4223-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                     Salvatore Bonaccorso
June 08, 2018                         https://www.debian.org/security/faq
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Package        : gnupg1
CVE ID         : CVE-2018-12020
Debian Bug     : 901088

Marcus Brinkmann discovered that GnuGPG performed insufficient
sanitisation of file names displayed in status messages, which could be
abused to fake the verification status of a signed email.

Details can be found in the upstream advisory at
https://lists.gnupg.org/pipermail/gnupg-announce/2018q2/000425.html

For the stable distribution (stretch), this problem has been fixed in
version 1.4.21-4+deb9u1.

We recommend that you upgrade your gnupg1 packages.

For the detailed security status of gnupg1 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/gnupg1

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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