Red Hat update for python-cryptography

1) Information disclosure

EUVDB-ID: #VU15945

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-10903

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Red Hat OpenStack Director Deployment Tools: 13.0

Red Hat OpenStack Director Deployment Tools for IBM Power: 13.0

Red Hat OpenStack for IBM Power: 13.0

Red Hat OpenStack: 13.0

External links

http://access.redhat.com/errata/RHSA-2018:3600

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.