Improper Certificate Validation in Pulp

1) Improper Certificate Validation

EUVDB-ID: #VU38200

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2015-5263

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

pulp-consumer-client 2.4.0 through 2.6.3 does not check the server's TLS certificate signatures when retrieving the server's public key upon registration.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Pulp: 2.4.0 - 2.6.3

CPE2.3

• cpe:2.3:a:pulp:pulp:2.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:pulp:pulp:2.4.1:*:*:*:*:*:*:*
• cpe:2.3:a:pulp:pulp:2.4.2:*:*:*:*:*:*:*

External links

https://cve.killedkenny.io/cve/CVE-2015-5263
https://www.openwall.com/lists/oss-security/2015/09/24/4
https://github.com/pulp/pulp/blob/aa432bf58497b5e3682333b1d5f5ae4f45788a61/client_consumer/pulp/client/consumer/cli.py#L103
https://github.com/pulp/pulp/commit/b542d7465f7e6e02e1ea1aec059ac607a65cefe7#diff-17110211f89c042a9267e2167dedd754

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.