CVE-2021-22880
The PostgreSQL adapter in Active Record before 6.1.2.1, 6.0.3.5, 5.2.4.5 suffers from a regular expression denial of service (REDoS) vulnerability.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The PostgreSQL adapter in Active Record before 6.1.2.1, 6.0.3.5, 5.2.4.5 suffers from a regular expression denial of service (REDoS) vulnerability. Carefully crafted input can cause the input validation in the `money` type of the PostgreSQL adapter in Active Record to spend too much time in a regular expression, resulting in the potential for a DoS attack. This only impacts Rails applications that are using PostgreSQL along with money type columns that take user input.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.43% probability · 91th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- rubyonrails/rails · fedoraproject/fedora
- Source
- support@hackerone.com
References
- https://discuss.rubyonrails.org/t/cve-2021-22880-possible-dos-vulnerability-in-active-record-postgresql-adapter/77129Mitigation, Patch, Vendor Advisory
- https://hackerone.com/reports/1023899Exploit, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO5OJ3F4ZL3UXVLJO6ECANRVZBNRS2IH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/
- https://security.netapp.com/advisory/ntap-20210805-0009/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4929Third Party Advisory
- https://discuss.rubyonrails.org/t/cve-2021-22880-possible-dos-vulnerability-in-active-record-postgresql-adapter/77129Mitigation, Patch, Vendor Advisory
- https://hackerone.com/reports/1023899Exploit, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO5OJ3F4ZL3UXVLJO6ECANRVZBNRS2IH/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XQ3NS4IBYE2I3MVMGAHFZBZBIZGHXHT3/
- https://security.netapp.com/advisory/ntap-20210805-0009/Third Party Advisory
- https://www.debian.org/security/2021/dsa-4929Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.