CVE-2022-42252
If Apache Tomcat 8.5.0 to 8.5.82, 9.0.0-M1 to 9.0.67, 10.0.0-M1 to 10.0.26 or 10.1.0-M1 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false (the default for 8.5.x only), Tomcat did not reject a request…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.54%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
If Apache Tomcat 8.5.0 to 8.5.82, 9.0.0-M1 to 9.0.67, 10.0.0-M1 to 10.0.26 or 10.1.0-M1 to 10.1.0 was configured to ignore invalid HTTP headers via setting rejectIllegalHeader to false (the default for 8.5.x only), Tomcat did not reject a request containing an invalid Content-Length header making a request smuggling attack possible if Tomcat was located behind a reverse proxy that also failed to reject the request with the invalid header.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.54% probability · 74th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- apache/tomcat
- Source
- security@apache.org
References
- https://lists.apache.org/thread/zzcxzvqfdqn515zfs3dxb7n8gty589sqMailing List, Vendor Advisory
- https://security.gentoo.org/glsa/202305-37
- https://lists.apache.org/thread/zzcxzvqfdqn515zfs3dxb7n8gty589sqMailing List, Vendor Advisory
- https://security.gentoo.org/glsa/202305-37
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.