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    CVE-2021-20213

    A flaw was found in Privoxy in versions before 3.0.29. Dereference of a NULL-pointer that could result in a crash if accept-intercepted-requests was enabled, Privoxy failed to get the request destination from the Host header and a memory allocation failed.

    Published:Mar 25, 2021
    Last Modified:Nov 21, 2024
    EPS:Mar 25, 2021
    EPSS Score:0.01263
    CVSS Score:7.5

    Affected Products

    Vendor
    Privoxy
    Product
    Privoxy

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2021-44542 (CVSS 7.5) — A memory leak vulnerability was found in Privoxy when handling errors.…
    CVE-2021-44541 (CVSS 7.5) — A vulnerability was found in Privoxy which was fixed in process_encrypted_request_headers() by freeing header …
    CVE-2021-44540 (CVSS 7.5) — A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pat…
    CVE-2021-20209 (CVSS 7.5) — A memory leak vulnerability was found in Privoxy before 3.0.29 in the show-status CGI handler when no action f…
    CVE-2021-20217 (CVSS 7.5) — A flaw was found in Privoxy in versions before 3.0.31. An assertion failure triggered by a crafted CGI request…
    CVE-2021-20216 (CVSS 7.5) — A flaw was found in Privoxy in versions before 3.0.31. A memory leak that occurs when decompression fails unex…
    CVE-2021-20215 (CVSS 7.5) — A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the show-status CGI handler when memory…
    CVE-2021-20214 (CVSS 7.5) — A flaw was found in Privoxy in versions before 3.0.29. Memory leaks in the client-tags CGI handler when client…
    CVE-2021-20212 (CVSS 7.5) — A flaw was found in Privoxy in versions before 3.0.29. Memory leak if multiple filters are executed and the la…

    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