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    CVE-2017-9438

    libyara/re.c in the regexp module in YARA 3.5.0 allows remote attackers to cause a denial of service (stack consumption) via a crafted rule (involving hex strings) that is mishandled in the _yr_re_emit function, a different vulnerability than CVE-2017-9304.

    Published:Jun 5, 2017
    Last Modified:Apr 20, 2025
    EPS:Jun 5, 2017
    EPSS Score:0.00614
    CVSS Score:7.5

    Affected Products

    Vendor
    Virustotal
    Product
    Yara

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-674 Uncontrolled Recursion

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-230 Serialized Data with Nested Payloads
    CAPEC-231 Oversized Serialized Data Payloads

    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-2018-19975 (CVSS 5.5) — In YARA 3.8.1, bytecode in a specially crafted compiled rule can read data from any arbitrary address in 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…

    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