DescriptionA regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tomcat10 (PTS)bookworm, bookworm (security)10.1.6-1+deb12u1fixed
trixie, sid10.1.16-1fixed
tomcat9 (PTS)buster9.0.31-1~deb10u6fixed
buster (security)9.0.31-1~deb10u11fixed
bullseye (security), bullseye9.0.43-2~deb11u9fixed
trixie, sid, bookworm9.0.70-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tomcat10sourcebookworm(not affected)
tomcat9source(unstable)(not affected)


[bookworm] - tomcat10 <not-affected> (Issue introduced in 10.1.8)
- tomcat9 <not-affected> (Vulnerable code introduced in 9.0.74)
Introduced due to fix for:
Fixed by:

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