CVE-2023-45648

    Dashboard / Vulnerabilities / CVE-2023-45648

    CVE-2023-45648

    Published: 10 Oct 2023Last Modified: 12 Aug 2026

    Summary: Apache Tomcat: Trailer header parsing too lenient

    Details: Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fix the issue.

    References: http://www.openwall.com/lists/oss-security/2023/10/10/10, https://lists.debian.org/debian-lts-announce/2023/10/msg00020.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/45xxx/CVE-2023-45648.json, https://lists.apache.org/thread/2pv8yz1pyp088tsxfb7ogltk9msk0jdp, https://nvd.nist.gov/vuln/detail/CVE-2023-45648, https://security.netapp.com/advisory/ntap-20231103-0007/, https://www.debian.org/security/2023/dsa-5521, https://www.debian.org/security/2023/dsa-5522

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- e37b977db6f47e4380ad67114a49e8568951c953
    Fixed -36d4f7d698f71cd322204a3b242a97c54860fb8c

    Affected versions

    10.1.0-milestone1
    10.1.0-milestone10
    10.1.0-milestone11
    10.1.0-milestone12
    10.1.0-milestone13
    10.1.0-milestone14
    10.1.0-milestone15
    10.1.0-milestone16
    10.1.0-milestone17
    10.1.0-milestone18
    10.1.0-milestone19
    10.1.0-milestone2
    10.1.0-milestone20
    10.1.0-milestone3
    10.1.0-milestone4
    10.1.0-milestone5
    10.1.0-milestone6
    10.1.0-milestone7
    10.1.0-milestone8
    10.1.0-milestone9

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2023-45648 | CVE-DB