CVE-2006-3251

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    CVE-2006-3251

    Published: 27 Jun 2006Last Modified: 10 Apr 2026

    Summary:

    Details: Heap-based buffer overflow in the array_push function in hashcash.c for Hashcash before 1.21 might allow attackers to execute arbitrary code via crafted entries.

    References: http://secunia.com/advisories/20800, http://secunia.com/advisories/20846, http://secunia.com/advisories/21146, http://www.debian.org/security/2006/dsa-1114, http://www.vupen.com/english/advisories/2006/2551, http://www.securityfocus.com/bid/18659, http://www.gentoo.org/security/en/glsa/glsa-200606-25.xml, http://www.hashcash.org/source/CHANGELOG, https://exchange.xforce.ibmcloud.com/vulnerabilities/27422

    Affected packages

    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