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Sicherheit: Preisgabe von Informationen in python-cryptography
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Name: Preisgabe von Informationen in python-cryptography
ID: openSUSE-SU-2018:3445-1
Distribution: SUSE
Plattformen: SUSE openSUSE Leap 15.0
Datum: Do, 25. Oktober 2018, 23:19
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-10903
Applikationen: python-cryptography

Originalnachricht

   openSUSE Security Update: Security update for python-cryptography
______________________________________________________________________________

Announcement ID: openSUSE-SU-2018:3445-1
Rating: moderate
References: #1101820
Cross-References: CVE-2018-10903
Affected Products:
openSUSE Leap 15.0
______________________________________________________________________________

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).

This update was imported from the SUSE:SLE-15:Update update project.


Patch Instructions:

To install this openSUSE 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:

- openSUSE Leap 15.0:

zypper in -t patch openSUSE-2018-1281=1



Package List:

- openSUSE Leap 15.0 (i586 x86_64):

python-cryptography-debuginfo-2.1.4-lp150.3.3.1
python-cryptography-debugsource-2.1.4-lp150.3.3.1
python2-cryptography-2.1.4-lp150.3.3.1
python2-cryptography-debuginfo-2.1.4-lp150.3.3.1
python3-cryptography-2.1.4-lp150.3.3.1
python3-cryptography-debuginfo-2.1.4-lp150.3.3.1


References:

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

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