CVE-2025-27111

EUVD-2025-6155
Rack is a modular Ruby web server interface. The Rack::Sendfile middleware logs unsanitised header values from the X-Sendfile-Type header. An attacker can exploit this by injecting escape sequences (such as newline characters) into the header, resulting in log injection. This vulnerability is fixed in 2.2.12, 3.0.13, and 3.1.11.
CRLF Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 62%
Affected Products (NVD)
VendorProductVersion
rackrack
𝑥
< 2.2.12
rackrack
3.0.0 ≤
𝑥
< 3.0.13
rackrack
3.1.0 ≤
𝑥
< 3.1.11
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
ruby-rack
bookworm
2.2.20-0+deb12u1
fixed
bookworm (security)
2.2.20-0+deb12u1
fixed
bullseye
vulnerable
bullseye (security)
2.1.4-3+deb11u4
fixed
forky
3.1.18-1
fixed
sid
3.2.4-1
fixed
trixie
3.1.18-1~deb13u1
fixed
trixie (security)
3.1.18-1~deb13u1
fixed
Common Weakness Enumeration
References
https://github.com/rack/rack/commit/803aa221e8302719715e224f4476e438f2531a53
https://github.com/rack/rack/commit/aeac570bb8080ca7b53b7f2e2f67498be7ebd30b
https://github.com/rack/rack/commit/b13bc6bfc7506aca3478dc5ac1c2ec6fc53f82a3
https://github.com/rack/rack/security/advisories/GHSA-8cgq-6mh2-7j6v
https://lists.debian.org/debian-lts-announce/2025/03/msg00016.html