CVE-2020-11076highCWE-444

HTTP Smuggling via Transfer-Encoding Header in Puma

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 4.0%

exploitation probability

4.0%top 10% of all CVEs

observed exploitation

nono source reports it

In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

puma · puma

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22 https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/