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Fencer Intel
medium 5.3

CVE-2020-1722 json

A flaw was found in all ipa versions 4.x.x through 4.8.0.

published 6y ago modified 4mo ago also EUVD-2020-12573

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits
0
none known

Summary

A flaw was found in all ipa versions 4.x.x through 4.8.0. 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.

Patch / fix

  • freeipa Debian 14, Debian 13, Debian 12 4.8.8-2

debian advisories DEBIAN-CVE-2020-1722

  • ipa RHEL 8 4.8.7-12.module+el8.3.0+8223+6212645f
  • pyusb RHEL 8 1.0.0-9.module+el8.1.0+4107+4a66eb87
  • softhsm RHEL 8 2.6.0-3.module+el8.3.0+6909+fb33717d
  • custodia RHEL 8 0.6.0-3.module+el8.1.0+4098+f286395e
  • slapi-nis RHEL 8 0.56.5-4.module+el8.3.0+8222+c1bff54a
  • ipa-client RHEL 8 4.8.7-12.module+el8.3.0+8223+6212645f
  • ipa-common RHEL 8 4.8.7-12.module+el8.3.0+8223+6212645f
  • ipa-server RHEL 8 4.8.7-12.module+el8.3.0+8222+c1bff54a

red hat advisories RHSA-2020:4670RHSA-2020:3936

  • custodia AlmaLinux 8 0.6.0-3.module_el8.6.0+2881+2f24dc92
  • python3-pyusb AlmaLinux 8 1.0.0-9.module_el8.5.0+2641+983b221b
  • python3-pyusb AlmaLinux 8 1.0.0-9.module_el8.6.0+2881+2f24dc92
  • python3-pyusb AlmaLinux 8 1.0.0-9.module_el8.6.0+2737+7e73ea90
  • python3-qrcode AlmaLinux 8 5.1-12.module_el8.6.0+2881+2f24dc92
  • python3-qrcode AlmaLinux 8 5.1-12.module_el8.5.0+2641+983b221b
  • python3-qrcode AlmaLinux 8 5.1-12.module_el8.6.0+2737+7e73ea90
  • python3-yubico AlmaLinux 8 1.3.2-9.module_el8.5.0+2641+983b221b

almalinux advisories ALSA-2020:4670

  • pyusb Rocky Linux 8 1.0.0-9.module+el8.4.0+429+6bd33fea
  • pyusb Rocky Linux 8 1.0.0-9.1.module+el8.7.0+1074+aae18f3a
  • custodia Rocky Linux 8 0.6.0-3.module+el8.4.0+429+6bd33fea
  • python-qrcode Rocky Linux 8 5.1-12.module+el8.4.0+429+6bd33fea
  • python-yubico Rocky Linux 8 1.3.2-9.module+el8.4.0+429+6bd33fea
  • python-yubico Rocky Linux 8 1.3.2-9.1.module+el8.7.0+1074+aae18f3a
  • python-jwcrypto Rocky Linux 8 0.5.0-1.module+el8.4.0+429+6bd33fea
  • python-jwcrypto Rocky Linux 8 0.5.0-1.1.module+el8.7.0+1074+aae18f3a

rocky linux advisories RLSA-2020:4670

Is CVE-2020-1722 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-1722 updated cvss 5.3

ipa: No password length restriction leads to denial of service

  • Red Hat Enterprise Linux 6 ipa, ipa-client, ipa-python, ipa-server, ipa-admintools, ipa-server-selinux, +1 more
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) ipa 4.8.7-12.module+el8.3.0+8222+c1bff54a, ipa 4.8.7-12.module+el8.3.0+8223+6212645f, pyusb 1.0.0-9.module+el8.1.0+4098+f286395e, pyusb 1.0.0-9.module+el8.1.0+4107+4a66eb87, softhsm 2.6.0-3.module+el8.3.0+6909+fb33717d, custodia 0.6.0-3.module+el8.1.0+4098+f286395e, +49 more
    fixed: vendor fix RHSA-2020:4670
  • Red Hat Enterprise Linux Client (v. 7) ipa 4.6.8-5.el7, ipa-client 4.6.8-5.el7, ipa-common 4.6.8-5.el7, python2-ipalib 4.6.8-5.el7, ipa-client-common 4.6.8-5.el7, ipa-python-compat 4.6.8-5.el7, +1 more Red Hat Enterprise Linux Client Optional (v. 7) ipa-server 4.6.8-5.el7, ipa-server-dns 4.6.8-5.el7, ipa-server-common 4.6.8-5.el7, python2-ipaserver 4.6.8-5.el7, ipa-server-trust-ad 4.6.8-5.el7 Red Hat Enterprise Linux ComputeNode (v. 7) ipa 4.6.8-5.el7, ipa-client 4.6.8-5.el7, ipa-common 4.6.8-5.el7, python2-ipalib 4.6.8-5.el7, ipa-client-common 4.6.8-5.el7, ipa-python-compat 4.6.8-5.el7, +1 more Red Hat Enterprise Linux ComputeNode Optional (v. 7) ipa-server 4.6.8-5.el7, ipa-server-dns 4.6.8-5.el7, ipa-server-common 4.6.8-5.el7, python2-ipaserver 4.6.8-5.el7, ipa-server-trust-ad 4.6.8-5.el7 Red Hat Enterprise Linux Server (v. 7) ipa 4.6.8-5.el7, ipa-client 4.6.8-5.el7, ipa-common 4.6.8-5.el7, ipa-server 4.6.8-5.el7, ipa-server-dns 4.6.8-5.el7, python2-ipalib 4.6.8-5.el7, +6 more Red Hat Enterprise Linux Workstation (v. 7) ipa 4.6.8-5.el7, ipa-client 4.6.8-5.el7, ipa-common 4.6.8-5.el7, ipa-server 4.6.8-5.el7, ipa-server-dns 4.6.8-5.el7, python2-ipalib 4.6.8-5.el7, +6 more
    fixed: vendor fix RHSA-2020:3936

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.07% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 3.1 5.3 CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 5.4 AV:N/AC:H/Au:N/C:N/I:N/A:C

Affected products

  • Red Hat ipa

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.