Login Request a demo
High severity · published May 22, 2020
CVE-2020-11076
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
7.5
CVSS
4.1%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0 · source: NVD
FE
Fedora · Fedoraproject
33 · source: NVD
PU
Puma · Puma
3.0.0 before 3.12.6; 4.0.0 before 4.3.5 · source: NVD
Affected product
DL
Debian Linux
Debian
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-11076
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-11076
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038.html
Release Notes
https://github.com/puma/puma/blob/master/History.md#434435-and-31253126--2020-05-22
Patch
https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2bd275bd
Third Party Advisory
https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5h
Mailing List
https://lists.debian.org/debian-lts-announce/2020/10/msg00009.html
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