Information disclosure in python-cryptography - CVE-2018-10903

 

Information disclosure in python-cryptography - CVE-2018-10903

Published: November 16, 2018 / Updated: November 19, 2018


Vulnerability identifier: #VU15945
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-10903
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to due to insufficient enforcement of a minimum tag length prior to passing user-supplied input to the finalize_with_tag API. A remote attacker can send a specially crafted request that submits a malicious short tag length, trigger key leakage and access sensitive information.


Affected software

python-cryptography
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro
openSUSE Leap Micro
SUSE Enterprise Storage
Opensuse
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Server
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Module for Basesystem
SUSE Linux Enterprise Module for Python2
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Desktop
openSUSE Leap
Red Hat OpenStack for IBM Power
Red Hat OpenStack
Red Hat OpenStack Director Deployment Tools
Red Hat OpenStack Director Deployment Tools for IBM Power
python2-cryptography-vectors
python3-cryptography-vectors
python-cryptography-debuginfo
python-cryptography-debugsource
python3-cryptography
python3-cryptography-debuginfo
python2-cryptography
python2-cryptography-debuginfo
PowerStore T
Dell EMC VxRail Appliance

How to mitigate CVE-2018-10903

Update to version 2.3.

python-cryptography - update to 2.3
python2-cryptography-vectors - update to 2.9.2-150200.3.3.1
python3-cryptography-vectors - update to 2.9.2-150200.3.3.1
python-cryptography-debuginfo - update to 2.9.2-150200.13.1
python-cryptography-debugsource - update to 2.9.2-150200.13.1
python3-cryptography - update to 2.9.2-150200.13.1
python3-cryptography-debuginfo - update to 2.9.2-150200.13.1
python2-cryptography - update to 2.9.2-150200.13.1
python2-cryptography-debuginfo - update to 2.9.2-150200.13.1
PowerStore T - update to 3.5.0.1-2083289
Dell EMC VxRail Appliance - update to 7.0.411

External References

Related Security Bulletins