CVE-2023-1973
Undertow Denial of Service vulnerability
7.5
HIGH
CVSS 3.1
EPSS 0.73%
Description
A flaw was found in Undertow package. Using the FormAuthenticationMechanism, a malicious user could trigger a Denial of Service by sending crafted requests, leading the server to an OutofMemory error, exhausting the server's memory.
How to fix CVE-2023-1973
To remediate CVE-2023-1973, upgrade the affected package to a fixed version below.
- Debian/undertow—upgrade to 2.3.18-1 or later
- —upgrade to 2.3.18-1 or later
- —upgrade to 2.2.32.Final or later
Is CVE-2023-1973 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.3.18-1
- from 0, < 2.3.18-1
- from 0, < 2.2.32.Final
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U |
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |