Input validation error in FreeIPA

1) Input validation error

EUVDB-ID: #VU36812

Risk: High

CVSSv4.0: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-2590

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to #BASIC_IMPACT#.

A vulnerability was found in ipa before 4.4. IdM's ca-del, ca-disable, and ca-enable commands did not properly check the user's permissions while modifying CAs in Dogtag. An authenticated, unauthorized attacker could use this flaw to delete, disable, or enable CAs causing various denial of service problems with certificate issuance, OCSP signing, and deletion of secret keys.

Mitigation

Install update from vendor's website.

Vulnerable software versions

FreeIPA: 4.0.0 - 4.3.3

CPE2.3

• cpe:2.3:a:freeipa_org:freeipa:4.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:freeipa_org:freeipa:4.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:freeipa_org:freeipa:4.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:freeipa_org:freeipa:4.3.3:*:*:*:*:*:*:*

External links

https://rhn.redhat.com/errata/RHSA-2017-0388.html
https://www.securityfocus.com/bid/96557
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2590

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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