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Sicherheit: Zwei Probleme in GnuPG
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in GnuPG
ID: USN-3675-1
Distribution: Ubuntu
Plattformen: Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 17.10, Ubuntu 18.04 LTS
Datum: Di, 12. Juni 2018, 07:36
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-9234
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12020
Applikationen: The GNU Privacy Guard

Originalnachricht


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==========================================================================
Ubuntu Security Notice USN-3675-1
June 11, 2018

gnupg, gnupg2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in GnuPG.

Software Description:
- gnupg2: GNU privacy guard - a free PGP replacement
- gnupg: GNU privacy guard - a free PGP replacement

Details:

Marcus Brinkmann discovered that during decryption or verification,
GnuPG did not properly filter out terminal sequences when reporting the
original filename. An attacker could use this to specially craft a file
that would cause an application parsing GnuPG output to incorrectly
interpret the status of the cryptographic operation reported by GnuPG.
(CVE-2018-12020)

Lance Vick discovered that GnuPG did not enforce configurations where
key certification required an offline master Certify key. An attacker
with access to a signing subkey could generate certifications that
appeared to be valid. This issue only affected Ubuntu 18.04 LTS.
(CVE-2018-9234)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
gnupg 2.2.4-1ubuntu1.1
gpg 2.2.4-1ubuntu1.1

Ubuntu 17.10:
gnupg 2.1.15-1ubuntu8.1

Ubuntu 16.04 LTS:
gnupg 1.4.20-1ubuntu3.2

Ubuntu 14.04 LTS:
gnupg 1.4.16-1ubuntu2.5

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3675-1
CVE-2018-12020, CVE-2018-9234

Package Information:
https://launchpad.net/ubuntu/+source/gnupg2/2.2.4-1ubuntu1.1
https://launchpad.net/ubuntu/+source/gnupg2/2.1.15-1ubuntu8.1
https://launchpad.net/ubuntu/+source/gnupg/1.4.20-1ubuntu3.2
https://launchpad.net/ubuntu/+source/gnupg/1.4.16-1ubuntu2.5


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