Vulnerability · Published Oct 10, 2023 · Assigned by GitHub_M
CVE-2023-36478HTTP/2 HPACK integer overflow and buffer allocation
High 7.5
In plain English
A high-severity integer overflow in jetty.project from eclipse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.8% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | jetty-runner | 9.4.53.20231009-r0 | ALPINE-CVE-2023-36478 |
| Alpine:v3.21 | jetty-runner | 9.4.53.20231009-r0 | ALPINE-CVE-2023-36478 |
| Alpine:v3.22 | jetty-runner | 9.4.53.20231009-r0 | ALPINE-CVE-2023-36478 |
| Alpine:v3.23 | jetty-runner | 9.4.53.20231009-r0 | ALPINE-CVE-2023-36478 |
| Alpine:v3.24 | jetty-runner | 9.4.53.20231009-r0 | ALPINE-CVE-2023-36478 |
| Debian:12 | jetty9 | 9.4.50-4+deb12u2 | DSA-5540-1 |
| Debian:12 | jetty9 | 9.4.50-4+deb12u2 | DEBIAN-CVE-2023-36478 |
| Debian:13 | jetty9 | 9.4.53-1 | DEBIAN-CVE-2023-36478 |
| Debian:14 | jetty9 | 9.4.53-1 | DEBIAN-CVE-2023-36478 |
| Maven | org.eclipse.jetty.http2:http2-hpack | 10.0.16 | GHSA-wgh7-54f2-x98r |
| Maven | org.eclipse.jetty.http2:http2-hpack | 9.4.53 | GHSA-wgh7-54f2-x98r |
| Maven | org.eclipse.jetty.http2:http2-hpack | 11.0.16 | GHSA-wgh7-54f2-x98r |
| Maven | org.eclipse.jetty.http3:http3-qpack | 11.0.16 | GHSA-wgh7-54f2-x98r |
| Maven | org.eclipse.jetty.http3:http3-qpack | 10.0.16 | GHSA-wgh7-54f2-x98r |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| eclipse | jetty.project | >= 10.0.0, < 10.0.16>= 11.0.0, < 11.0.16>= 9.3.0, < 9.4.53 |
Weakness: CWE-190, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/eclipse/jetty.project/security/advisories/GHSA-wgh7-54f2-x98r x_refsource_CONFIRM
- https://github.com/eclipse/jetty.project/pull/9634 x_refsource_MISC
- https://github.com/eclipse/jetty.project/releases/tag/jetty-10.0.16 x_refsource_MISC
- https://github.com/eclipse/jetty.project/releases/tag/jetty-11.0.16 x_refsource_MISC
- https://github.com/eclipse/jetty.project/releases/tag/jetty-9.4.53.v20231009 x_refsource_MISC
- http://www.openwall.com/lists/oss-security/2023/10/18/4
- https://lists.debian.org/debian-lts-announce/2023/10/msg00045.html
- https://www.debian.org/security/2023/dsa-5540
- https://security.netapp.com/advisory/ntap-20231116-0011/
- https://security.netapp.com/advisory/ntap-20240621-0006/