CURL-CVE-2015-3237

    Dashboard / Vulnerabilities / CURL-CVE-2015-3237

    CURL-CVE-2015-3237

    Published: 17 Jun 2015Last Modified: 27 May 2026
    Aliases:
    CVE-2015-3237

    Summary: SMB send off unrelated memory contents

    Details: libcurl can get tricked by a malicious SMB server to send off data it did not intend to. In libcurl's state machine function handling the SMB protocol (`smb_request_state()`), two length and offset values are extracted from data that has arrived over the network, and those values are subsequently used to figure out what data range to send back. The values are used and trusted without boundary checks and are assumed to be valid. This allows carefully handcrafted packages to trick libcurl into responding and sending off data that was not intended. Or crash if the values cause libcurl to access invalid memory.

    References:

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 7.40.0
    Fixed -7.43.0

    Affected versions

    7.42.1
    7.42.0

    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
    CURL-CVE-2015-3237 | CVE-DB