Vulnerability Details : CVE-2023-36478
Potential exploit
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.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2023-36478
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
- cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
- cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
- cpe:2.3:a:eclipse:jetty:*:*:*:*:*:*:*:*
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*
- cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-36478
0.49%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 76 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-36478
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
GitHub, Inc. |
CWE ids for CVE-2023-36478
-
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.Assigned by:
- nvd@nist.gov (Secondary)
- security-advisories@github.com (Primary)
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by: security-advisories@github.com (Primary)
References for CVE-2023-36478
-
https://github.com/eclipse/jetty.project/pull/9634
Issue #9554 - move common hpack/qpack code to jetty-http (jetty-10) by lachlan-roberts · Pull Request #9634 · eclipse/jetty.project · GitHubIssue Tracking;Patch
-
https://security.netapp.com/advisory/ntap-20231116-0011/
CVE-2023-36478 Eclipse Jetty Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
-
https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgh7-54f2-x98r
HTTP/2 HPACK integer overflow and buffer allocation · Advisory · eclipse/jetty.project · GitHubExploit;Vendor Advisory
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https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html
[SECURITY] [DLA 3641-1] jetty9 security updateMailing List
-
https://github.com/eclipse/jetty.project/releases/tag/jetty-10.0.16
Release 10.0.16 · eclipse/jetty.project · GitHubRelease Notes
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https://github.com/eclipse/jetty.project/releases/tag/jetty-11.0.16
Release 11.0.16 · eclipse/jetty.project · GitHubRelease Notes
-
https://www.debian.org/security/2023/dsa-5540
Debian -- Security Information -- DSA-5540-1 jetty9Third Party Advisory
-
https://security.netapp.com/advisory/ntap-20240621-0006/
February 2024 IBM Cognos Analytics Vulnerabilities in NetApp Products | NetApp Product Security
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https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.53.v20231009
Release 9.4.53.v20231009 · eclipse/jetty.project · GitHubRelease Notes
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http://www.openwall.com/lists/oss-security/2023/10/18/4
oss-security - Vulnerability in JenkinsMailing List;Third Party Advisory
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