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    CVE-2000-0453

    XFree86 3.3.x and 4.0 allows a user to cause a denial of service via a negative counter value in a malformed TCP packet that is sent to port 6000.

    Published:May 18, 2000
    Last Modified:Apr 16, 2026
    EPS:Jul 12, 2000
    EPSS Score:0.05761
    CVSS Score:5

    Affected Products

    Vendor
    Xfree86 Project
    Product
    X11r6

    Exploits

    https://www.exploit-db.com/exploits/19950

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2004-0914 (CVSS 10) — Multiple vulnerabilities in libXpm for 6.8.1 and earlier, as used in XFree86 and other packages, include (1) m…
    CVE-2004-0094 (CVSS 7.5) — Integer signedness errors in XFree86 4.1.0 allow remote attackers to cause a denial of service and possibly ex…
    CVE-2004-0093 (CVSS 7.5) — XFree86 4.1.0 allows remote attackers to cause a denial of service and possibly execute arbitrary code via an …
    CVE-2004-0106 (CVSS 7.2) — Multiple unknown vulnerabilities in XFree86 4.1.0 to 4.3.0, related to improper handling of font files, a diff…
    CVE-2004-0084 (CVSS 10) — Buffer overflow in the ReadFontAlias function in XFree86 4.1.0 to 4.3.0, when using the CopyISOLatin1Lowered f…
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    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