CVE-2020-11076
HIGH severity · CVSS 7.5 · CWE-444
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactHigh
Availability impactNone
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd ↗
Additional information
- NVD record
- https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bdPatch
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.htmlAdvisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.htmlAdvisory
- https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22
- https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5hAdvisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00009.htmlAdvisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKIY5H67GJIGJL6SMFWFLUQQQR3EMVPR/