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    CVE-2020-9498

    Apache Guacamole 1.1.0 and older may mishandle pointers involved inprocessing data received via RDP static virtual channels. If a userconnects to a malicious or compromised RDP server, a series ofspecially-crafted PDUs could result in memory corruption, possiblyallowing arbitrary code to be executed with the privileges of therunning guacd process.

    Published:Jul 2, 2020
    Last Modified:Nov 21, 2024
    EPS:Jul 2, 2020
    EPSS Score:0.00107
    CVSS Score:6.7

    Affected Products

    Vendor
    Apache
    Product
    Guacamole
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Fedoraproject
    Product
    Fedora

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2024-35164 (CVSS 6.8) — The terminal emulator of Apache Guacamole 1.5.5 and older does not properly validate console codes received fr…
    CVE-2023-43826 (CVSS 7.5) — Apache Guacamole 1.5.3 and older do not consistently ensure that values received from a VNC server will not re…
    CVE-2023-30576 (CVSS 6.8) — Apache Guacamole 0.9.10 through 1.5.1 may continue to reference a freed RDP audio input buffer. Depending on t…
    CVE-2023-30575 (CVSS 6.5) — Apache Guacamole 1.5.1 and older may incorrectly calculate the lengths of instruction elements sent during the…
    CVE-2021-43999 (CVSS 8.8) — Apache Guacamole 1.2.0 and 1.3.0 do not properly validate responses received from a SAML identity provider. If…
    CVE-2021-41767 (CVSS 6.5) — Apache Guacamole 1.3.0 and older may incorrectly include a private tunnel identifier in the non-private detail…
    CVE-2020-11997 (CVSS 4.3) — Apache Guacamole 1.2.0 and earlier do not consistently restrict access to connection history based on user vis…
    CVE-2020-9497 (CVSS 4.4) — Apache Guacamole 1.1.0 and older do not properly validate datareceived from RDP servers via static virtual cha…
    CVE-2019-19603 (CVSS 7.5) — SQLite 3.30.1 mishandles certain SELECT statements with a nonexistent VIEW, leading to an application crash.…
    CVE-2018-1340 (CVSS 7.5) — Prior to 1.0.0, Apache Guacamole used a cookie for client-side storage of the user's session token. This cooki…

    References

    https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44525
    https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/r26fb170edebff842c74aacdb1333c1338f0e19e5ec7854d72e4680fc%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/rff824b38ebd2fddc726b816f0e509696b83b9f78979d0cd021ca623b%40%3Cannounce.guacamole.apache.org%3E
    https://lists.debian.org/debian-lts-announce/2020/11/msg00010.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVV5K2X4EXSAVUUL7IJ3MUJ3ADWMVSBM/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNS7UHBOFV6JHWH5XOEZTE3BREGRSSQ3/
    https://research.checkpoint.com/2020/apache-guacamole-rce/
    https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44525
    https://lists.apache.org/thread.html/r1125f3044a0946d1e7e6f125a6170b58d413ebd4a95157e4608041c7%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/r26fb170edebff842c74aacdb1333c1338f0e19e5ec7854d72e4680fc%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/r90890afea72a9571d666820b2fe5942a0a5f86be406fa31da3dd0922%40%3Cannounce.apache.org%3E
    https://lists.apache.org/thread.html/rff824b38ebd2fddc726b816f0e509696b83b9f78979d0cd021ca623b%40%3Cannounce.guacamole.apache.org%3E
    https://lists.debian.org/debian-lts-announce/2020/11/msg00010.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TVV5K2X4EXSAVUUL7IJ3MUJ3ADWMVSBM/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNS7UHBOFV6JHWH5XOEZTE3BREGRSSQ3/
    https://research.checkpoint.com/2020/apache-guacamole-rce/

    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