CVE-2020-11076

HIGHScheduled

Published:May 22, 2020(6 years ago)

Modified:Nov 21, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability 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.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

🤖

AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
puma	puma	3.0.0 - 3.12.6	-
puma	puma	4.0.0 - 4.3.5	-
fedoraproject	fedora	-

Timeline

Published
CVE disclosed publicly
May 22, 20206 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20262 months ago

References

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034....Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038....Mailing List
https://github.com/puma/puma/blob/master/History.md#434435-and-3125312...Release Notes

CVSS Score

v3.1

7.5/ 10.0

HIGH

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

At a Glance

Affected Products

References

puma / puma

https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2b...Patch

https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5hThird Party Advisory

https://lists.debian.org/debian-lts-announce/2020/10/msg00009.htmlMailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00034....Mailing List

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00038....Mailing List

https://github.com/puma/puma/blob/master/History.md#434435-and-3125312...Release Notes

https://github.com/puma/puma/commit/f24d5521295a2152c286abb0a45a1e1e2b...Patch

https://github.com/puma/puma/security/advisories/GHSA-x7jg-6pwg-fx5hThird Party Advisory

https://lists.debian.org/debian-lts-announce/2020/10/msg00009.htmlMailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists...

CVSS v3 Vector

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

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

Impact

ScopeUnchanged

ConfidentialityNone

IntegrityHigh

AvailabilityNone

Impact Analysis

ConfidentialityNone

NoneLowHigh

IntegrityHigh

NoneLowHigh

AvailabilityNone

NoneLowHigh

CVE-2020-11076

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description