Red Hat update for python-cryptography

1) Information disclosure

EUVDB-ID: #VU15945

Risk: Low

CVSSv4.0: 2.7 [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/E:U/U:Clear]

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

CPE2.3

• cpe:2.3:a:red_hat:red_hat_openstack_director_deployment_tools:13.0:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:red_hat_openstack_director_deployment_tools_for_ibm_power:13.0:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:red_hat_openstack_for_ibm_power:13.0:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:red_hat_openstack:13.0:*:*:*:*:*:*:*

External links

https://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.