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    CVE-2021-30027

    md_analyze_line in md4c.c in md4c 0.4.7 allows attackers to trigger use of uninitialized memory, and cause a denial of service via a malformed Markdown document.

    Published:Apr 29, 2021
    Last Modified:Nov 21, 2024
    EPS:Apr 29, 2021
    EPSS Score:0.00133
    CVSS Score:5.5

    Affected Products

    Vendor
    Md4c Project
    Product
    Md4c

    Exploits

    https://github.com/mity/md4c/issues/155https://github.com/mity/md4c/issues/155

    Common Weakness Enumeration

    CWE-908 Use of Uninitialized Resource

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2020-26148 (CVSS 7.5) — md_push_block_bytes in md4c.c in md4c 0.4.5 allows attackers to trigger use of uninitialized memory, and cause…
    CVE-2018-12112 (CVSS 7.8) — md_build_attribute in md4c.c in md4c 0.2.6 allows remote attackers to cause a denial of service (Segmentation …
    CVE-2018-12102 (CVSS 5.5) — md4c 0.2.6 has a NULL pointer dereference in the function md_process_line in md4c.c, related to ctx->current_b…
    CVE-2018-11545 (CVSS 9.8) — md4c 0.2.5 has a heap-based buffer overflow in md_merge_lines because md_is_link_label mishandles the case of …
    CVE-2018-11546 (CVSS 9.8) — md4c 0.2.5 has a heap-based buffer over-read because md_is_named_entity_contents has an off-by-one error.…
    CVE-2018-11547 (CVSS 9.8) — md_is_link_reference_definition_helper in md4c 0.2.5 has a heap-based buffer over-read because md_is_link_labe…
    CVE-2018-11536 (CVSS 9.8) — md4c before 0.2.5 has a heap-based buffer overflow because md_split_simple_pairing_mark mishandles splits.…

    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