Bug 1793071 (CVE-2020-1722) - CVE-2020-1722 ipa: No password length restriction leads to denial of service
Summary: CVE-2020-1722 ipa: No password length restriction leads to denial of service
Status: NEW
Alias: CVE-2020-1722
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1802408 1802409 1823621
Blocks: 1780457
TreeView+ depends on / blocked
Reported: 2020-01-20 15:47 UTC by Dhananjay Arunesh
Modified: 2020-05-22 08:52 UTC (History)
14 users (show)

Fixed In Version:
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A flaw was found in IPA. When sending a very long password (>= 1,000,000 characters) to the server, the password hashing process could exhaust memory and CPU leading to a denial of service and the website becoming unresponsive. The highest threat from this vulnerability is to system availability.
Clone Of:
Last Closed:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Fedora Pagure freeipa issue 8268 None None None 2020-04-14 07:27:53 UTC

Description Dhananjay Arunesh 2020-01-20 15:47:11 UTC
A vulnerability was found in IPA, where by sending a very long password (1.000.000 characters) it's possible to cause a denial a service attack on the server. This may lead to the website becoming unavailable or unresponsive. Usually, this problem is caused by a vulnerable password hashing implementation. When a long password is sent, the password hashing process will result in CPU and memory exhaustion.

Comment 14 Huzaifa S. Sidhpurwala 2020-04-14 04:27:03 UTC

Name: Pritam Singh (Red Hat)

Comment 15 Huzaifa S. Sidhpurwala 2020-04-14 04:27:35 UTC
Created freeipa tracking bugs for this issue:

Affects: fedora-all [bug 1823621]

Comment 16 Alexander Bokovoy 2020-04-14 07:27:53 UTC
Link FreeIPA issue 8268 here: https://pagure.io/freeipa/issue/8268 

FreeIPA team agrees with Red Hat Security Response Team assessment that this is a low severity, low priority issue. 
The fix will be merged into FreeIPA upstream but no separate release will be done.

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