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Sicherheit: Preisgabe von Informationen in python-cryptography
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Name: Preisgabe von Informationen in python-cryptography
ID: SUSE-SU-2018:3553-1
Distribution: SUSE
Plattformen: SUSE OpenStack Cloud Crowbar 8, SUSE HPE Helion Openstack 8, SUSE OpenStack Cloud 8
Datum: Mo, 29. Oktober 2018, 23:13
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10903
Applikationen: python-cryptography

Originalnachricht

   SUSE Security Update: Security update for python-cryptography
______________________________________________________________________________

Announcement ID: SUSE-SU-2018:3553-1
Rating: moderate
References: #1101820
Cross-References: CVE-2018-10903
Affected Products:
SUSE OpenStack Cloud Crowbar 8
SUSE OpenStack Cloud 8
HPE Helion Openstack 8
______________________________________________________________________________

An update that fixes one vulnerability is now available.

Description:

This update for python-cryptography fixes the following issues:

- CVE-2018-10903: The finalize_with_tag API did not enforce a minimum tag
length. If a user did not validate the input length prior to passing it
to finalize_with_tag an attacker could craft an invalid payload with a
shortened tag (e.g. 1 byte) such that they would have a 1 in 256 chance
of passing the MAC check. GCM tag forgeries could have caused key
leakage (bsc#1101820)


Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation
methods
like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- SUSE OpenStack Cloud Crowbar 8:

zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2018-2517=1

- SUSE OpenStack Cloud 8:

zypper in -t patch SUSE-OpenStack-Cloud-8-2018-2517=1

- HPE Helion Openstack 8:

zypper in -t patch HPE-Helion-OpenStack-8-2018-2517=1



Package List:

- SUSE OpenStack Cloud Crowbar 8 (x86_64):

python-cryptography-2.0.3-3.3.1
python-cryptography-debuginfo-2.0.3-3.3.1
python-cryptography-debugsource-2.0.3-3.3.1

- SUSE OpenStack Cloud 8 (x86_64):

python-cryptography-2.0.3-3.3.1
python-cryptography-debuginfo-2.0.3-3.3.1
python-cryptography-debugsource-2.0.3-3.3.1

- HPE Helion Openstack 8 (x86_64):

python-cryptography-2.0.3-3.3.1
python-cryptography-debuginfo-2.0.3-3.3.1
python-cryptography-debugsource-2.0.3-3.3.1


References:

https://www.suse.com/security/cve/CVE-2018-10903.html
https://bugzilla.suse.com/1101820

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