UBUNTU-CVE-2023-36478

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Source
https://ubuntu.com/security/CVE-2023-36478
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-36478.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-36478
Related
Published
2023-10-10T17:15:00Z
Modified
2024-10-15T14:11:37Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:14.04:LTS / jetty

Package

Name
jetty
Purl
pkg:deb/ubuntu/jetty?arch=src?distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.1.26-1ubuntu1
6.1.26-1ubuntu1.1
6.1.26-1ubuntu1.2

Ecosystem specific

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:16.04:LTS / jetty

Package

Name
jetty
Purl
pkg:deb/ubuntu/jetty?arch=src?distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

6.*

6.1.26-5
6.1.26-5ubuntu0.1

Ecosystem specific

{
    "ubuntu_priority": "medium"
}