--- title: CVE-2023-28708 description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2023-28708 --- # CVE-2023-28708 Publication date 22 March 2023 Last updated 6 June 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **4.3 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2023-28708#impact-score) Toggle side navigation ## Description When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11.0.0-M1 to 11.0.0.-M2, 10.1.0-M1 to 10.1.5, 9.0.0-M1 to 9.0.71 and 8.5.0 to 8.5.85 did not include the secure attribute. This could result in the user agent transmitting the session cookie over an insecure channel. Older, EOL versions may also be affected. [Read the notes from the security team](https://ubuntu.com/security/CVE-2023-28708#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | tomcat6 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not affected | | tomcat7 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not affected | | 16.04 LTS xenial | Vulnerable | | 14.04 LTS trusty | Vulnerable | | tomcat8 | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Fixed 8.5.39-1ubuntu1~18.04.3+esm5 Ubuntu Pro | | 16.04 LTS xenial | Vulnerable | | 14.04 LTS trusty | Not in release | | tomcat9 | 26.04 LTS resolute | Fixed 9.0.70-2ubuntu3 | | 25.10 questing | Fixed 9.0.70-2ubuntu3 | | 25.04 plucky | Fixed 9.0.70-2ubuntu1.25.04.2 | | 24.10 oracular | Fixed 9.0.70-2ubuntu1.24.10.2 | | 24.04 LTS noble | Fixed 9.0.70-2ubuntu0.1+esm2 Ubuntu Pro | | 23.10 mantic | Ignored end of life, was needs-triage | | 23.04 lunar | Ignored end of life, was needs-triage | | 22.10 kinetic | Ignored end of life, was needs-triage | | 22.04 LTS jammy | Fixed 9.0.58-1ubuntu0.1+esm4 Ubuntu Pro | | 20.04 LTS focal | Fixed 9.0.31-1ubuntu0.8 | | 18.04 LTS bionic | Fixed 9.0.16-3ubuntu0.18.04.2+esm4 Ubuntu Pro | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | tomcat10 | 26.04 LTS resolute | Not affected | | 25.10 questing | Not affected | | 25.04 plucky | Not affected | | 24.10 oracular | Not affected | | 24.04 LTS noble | Not affected | | 23.10 mantic | Ignored end of life, was needs-triage | | 23.04 lunar | Ignored end of life, was needs-triage | | 22.10 kinetic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | | tomcat11 | 26.04 LTS resolute | Not affected | | 25.10 questing | Not affected | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Not in release | | 16.04 LTS xenial | Not in release | | 14.04 LTS trusty | Not in release | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ### Get expanded security coverage with Ubuntu Pro Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. 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[Get Ubuntu Pro](https://ubuntu.com/pro) [30-day free trial](https://ubuntu.com/pro/free-trial) ## Notes --- ### [ebarretto](https://launchpad.net/~ebarretto) bionic tomcat7 only builds libservlet3.0-java, not the Tomcat server binaries ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 4.3 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | Low | | Privileges required | None | | User interaction | Required | | Scope | Unchanged | | Confidentiality impact | Low | | Integrity impact | None | | Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 4.3 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28708) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2023-28708) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2023-28708) * [Debian](https://security-tracker.debian.org/tracker/CVE-2023-28708) ### Related Ubuntu Security Notices (USN) + [USN-7106-1](https://usn.ubuntu.com/USN-7106-1) + Tomcat vulnerabilities + 13 November 2024 + [USN-7562-1](https://usn.ubuntu.com/USN-7562-1) + Tomcat vulnerabilities + 9 June 2025 ### Other references * *