CVE-2023-36478
Assigner: GitHub_M
Published: 2023-10-10T16:53:07.063Z
State: PUBLISHED
title: HTTP/2 HPACK integer overflow and buffer allocation
problemTypes: descriptions: cweId: CWE-190
description: CWE-190: Integer Overflow or Wraparound
type: CWE
descriptions: cweId: CWE-400
description: CWE-400: Uncontrolled Resource Consumption
type: CWE
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
affected: vendor: eclipse
product: jetty.project
versions: version: >= 10.0.0, < 10.0.16
status: affected
version: >= 11.0.0, < 11.0.16
status: affected
version: >= 9.3.0, < 9.4.53
status: affected
descriptions: value: Eclipse Jetty provides a web server and servlet container. In versions 11.0.0 through 11.0.15, 10.0.0 through 10.0.15, and 9.0.0 through 9.4.52, an integer overflow in `MetaDataBuilder.checkSize` allows for HTTP/2 HPACK header values to
exceed their size limit. `MetaDataBuilder.java` determines if a header name or value exceeds the size limit, and throws an exception if the limit is exceeded. However, when length is very large and huffman is true, the multiplication by 4 in line 295
will overflow, and length will become negative. `(_size+length)` will now be negative, and the check on line 296 will not be triggered. Furthermore, `MetaDataBuilder.checkSize` allows for user-entered HPACK header value sizes to be negative, potentially leading to a very large buffer allocation later on when the user-entered size is multiplied by 2. This means that if a user provides a negative length value (or, more precisely, a length value which, when multiplied by the 4/3 fudge factor, is negative), and this length value is a very large positive number when multiplied by 2, then the user can cause a very large buffer to be allocated on the server. Users of HTTP/2 can be impacted by a remote denial of service attack. The issue has been fixed in versions 11.0.16, 10.0.16, and 9.4.53. There are no known workarounds.
source: advisory: GHSA-wgh7-54f2-x98r
discovery: UNKNOWN