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    CVE-2018-19975

    In YARA 3.8.1, bytecode in a specially crafted compiled rule can read data from any arbitrary address in memory, in libyara/exec.c. Specifically, OP_COUNT can read a DWORD.

    Published:Dec 17, 2018
    Last Modified:Nov 21, 2024
    EPS:Dec 17, 2018
    EPSS Score:0.00241
    CVSS Score:5.5

    Affected Products

    Vendor
    Virustotal
    Product
    Yara

    Exploits

    https://bnbdr.github.io/posts/extracheese/https://github.com/VirusTotal/yara/issues/999https://github.com/bnbdr/swisscheese/https://bnbdr.github.io/posts/extracheese/https://github.com/VirusTotal/yara/issues/999https://github.com/bnbdr/swisscheese/

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

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    CVE-2021-3402 (CVSS 9.1) — An integer overflow and several buffer overflow reads in libyara/modules/macho/macho.c in YARA v4.0.3 and earl…
    CVE-2019-19648 (CVSS 7.8) — In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may be inconsistent with t…
    CVE-2019-5020 (CVSS 5.5) — An exploitable denial of service vulnerability exists in the object lookup functionality of Yara 3.8.1. A spec…
    CVE-2018-19974 (CVSS 5.5) — In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memor…
    CVE-2018-19976 (CVSS 5.5) — In YARA 3.8.1, bytecode in a specially crafted compiled rule is exposed to information about its environment, …
    CVE-2018-12034 (CVSS 7.8) — In YARA 3.7.1 and prior, parsing a specially crafted compiled rule file can cause an out of bounds read vulner…
    CVE-2018-12035 (CVSS 7.8) — In YARA 3.7.1 and prior, parsing a specially crafted compiled rule file can cause an out of bounds write vulne…
    CVE-2017-11328 (CVSS 5.5) — Heap buffer overflow in the yr_object_array_set_item() function in object.c in YARA 3.x allows a denial-of-ser…

    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