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redhatcveRedhat.comRH:CVE-2023-36478
HistoryOct 11, 2023 - 10:42 a.m.

CVE-2023-36478

2023-10-1110:42:39
redhat.com
access.redhat.com
19
jetty
http2
http3
hpack
qpack
dos
attack
vulnerability

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.005

Percentile

76.5%

A flaw was found in Jetty http2-hpack and http3-qpack. If header values exceed the size limit and Huffman is the trueMetaDataBuilder.checkSize, the multiplication will overflow, and the length will become negative, causing a large buffer allocation on the server, leading to a Denial of Service (DoS) attack.

Mitigation

No mitigations are currently available for this vulnerability.

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.005

Percentile

76.5%