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SvalkanovH1:2446433

HistoryApr 03, 2024 - 9:28 p.m.

Internet Bug Bounty: [CVE-2024-26146] Header Parsing leads to Possible Denial of Service Vulnerability

2024-04-0321:28:53

svalkanov

hackerone.com

50

internet bug bounty

cve-2024-26146

header parsing

possible denial of service

vulnerability

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

7

Confidence

High

EPSS

0

Percentile

13.0%

I’ve made a report and provided a patch https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942

Impact

Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue. Accept and Forwarded headers are impacted.

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

AI Score

7

Confidence

High

EPSS

0

Percentile

13.0%