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Vulnerability Details :

CVE-2020-5247

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-28 Feb, 2020 | 16:55
Updated At-04 Aug, 2024 | 08:22
Rejected At-
Credits

HTTP Response Splitting in Puma

In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:28 Feb, 2020 | 16:55
Updated At:04 Aug, 2024 | 08:22
Rejected At:
▼CVE Numbering Authority (CNA)
HTTP Response Splitting in Puma

In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.

Affected Products
Vendor
Pumapuma
Product
Puma
Versions
Affected
  • < 3.12.3
  • >= 4.0.0, < 4.3.2
Problem Types
TypeCWE IDDescription
CWECWE-113CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')
Type: CWE
CWE ID: CWE-113
Description: CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
x_refsource_CONFIRM
https://owasp.org/www-community/attacks/HTTP_Response_Splitting
x_refsource_MISC
https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254
x_refsource_MISC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/
vendor-advisory
x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/
vendor-advisory
x_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/
vendor-advisory
x_refsource_FEDORA
https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
mailing-list
x_refsource_MLIST
Hyperlink: https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
Resource:
x_refsource_CONFIRM
Hyperlink: https://owasp.org/www-community/attacks/HTTP_Response_Splitting
Resource:
x_refsource_MISC
Hyperlink: https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254
Resource:
x_refsource_MISC
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/
Resource:
vendor-advisory
x_refsource_FEDORA
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/
Resource:
vendor-advisory
x_refsource_FEDORA
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/
Resource:
vendor-advisory
x_refsource_FEDORA
Hyperlink: https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
Resource:
mailing-list
x_refsource_MLIST
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
x_refsource_CONFIRM
x_transferred
https://owasp.org/www-community/attacks/HTTP_Response_Splitting
x_refsource_MISC
x_transferred
https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254
x_refsource_MISC
x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/
vendor-advisory
x_refsource_FEDORA
x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/
vendor-advisory
x_refsource_FEDORA
x_transferred
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/
vendor-advisory
x_refsource_FEDORA
x_transferred
https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
mailing-list
x_refsource_MLIST
x_transferred
Hyperlink: https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
Resource:
x_refsource_CONFIRM
x_transferred
Hyperlink: https://owasp.org/www-community/attacks/HTTP_Response_Splitting
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254
Resource:
x_refsource_MISC
x_transferred
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/
Resource:
vendor-advisory
x_refsource_FEDORA
x_transferred
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/
Resource:
vendor-advisory
x_refsource_FEDORA
x_transferred
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/
Resource:
vendor-advisory
x_refsource_FEDORA
x_transferred
Hyperlink: https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
Resource:
mailing-list
x_refsource_MLIST
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:28 Feb, 2020 | 17:15
Updated At:07 Nov, 2023 | 03:23

In Puma (RubyGem) before 4.3.2 and before 3.12.3, if an application using Puma allows untrusted input in a response header, an attacker can use newline characters (i.e. `CR`, `LF` or`/r`, `/n`) to end the header and inject malicious content, such as additional headers or an entirely new response body. This vulnerability is known as HTTP Response Splitting. While not an attack in itself, response splitting is a vector for several other attacks, such as cross-site scripting (XSS). This is related to CVE-2019-16254, which fixed this vulnerability for the WEBrick Ruby web server. This has been fixed in versions 4.3.2 and 3.12.3 by checking all headers for line endings and rejecting headers with those characters.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.17.5HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Primary2.05.0MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N
Type: Primary
Version: 3.1
Base score: 7.5
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Type: Secondary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Type: Primary
Version: 2.0
Base score: 5.0
Base severity: MEDIUM
Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:N
CPE Matches
Puma
puma
>>puma>>Versions up to 3.12.3(inclusive)
cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*
Puma
puma
>>puma>>Versions from 4.0.0(inclusive) to 4.3.2(inclusive)
cpe:2.3:a:puma:puma:*:*:*:*:*:ruby:*:*
Ruby
ruby-lang
>>ruby>>Versions up to 2.3.0(inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Ruby
ruby-lang
>>ruby>>Versions from 2.4.0(inclusive) to 2.4.7(inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Ruby
ruby-lang
>>ruby>>Versions from 2.5.0(inclusive) to 2.5.6(inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Ruby
ruby-lang
>>ruby>>Versions from 2.6.0(inclusive) to 2.6.4(inclusive)
cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*
Ruby
ruby-lang
>>ruby>>2.7.0
cpe:2.3:a:ruby-lang:ruby:2.7.0:preview1:*:*:*:*:*:*
Debian GNU/Linux
debian
>>debian_linux>>9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>30
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>31
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Fedora Project
fedoraproject
>>fedora>>32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-113Primarysecurity-advisories@github.com
CWE-74Secondarynvd@nist.gov
CWE ID: CWE-113
Type: Primary
Source: security-advisories@github.com
CWE ID: CWE-74
Type: Secondary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8vsecurity-advisories@github.com
Mitigation
Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00034.htmlsecurity-advisories@github.com
Mailing List
Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/security-advisories@github.com
N/A
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/security-advisories@github.com
N/A
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/security-advisories@github.com
N/A
https://owasp.org/www-community/attacks/HTTP_Response_Splittingsecurity-advisories@github.com
Third Party Advisory
https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254security-advisories@github.com
Vendor Advisory
Hyperlink: https://github.com/puma/puma/security/advisories/GHSA-84j7-475p-hp8v
Source: security-advisories@github.com
Resource:
Mitigation
Third Party Advisory
Hyperlink: https://lists.debian.org/debian-lts-announce/2022/05/msg00034.html
Source: security-advisories@github.com
Resource:
Mailing List
Third Party Advisory
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BMJ3CGZ3DLBJ5WUUKMI5ZFXFJQMXJZIK/
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DIHVO3CQMU7BZC7FCTSRJ33YDNS3GFPK/
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ3LL5F5QADB6LM46GXZETREAKZMQNRD/
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://owasp.org/www-community/attacks/HTTP_Response_Splitting
Source: security-advisories@github.com
Resource:
Third Party Advisory
Hyperlink: https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254
Source: security-advisories@github.com
Resource:
Vendor Advisory

Change History

0
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