MGASA-2021-0525

    Dashboard / Vulnerabilities / MGASA-2021-0525

    MGASA-2021-0525

    Published: 25 Nov 2021Last Modified: 16 Apr 2026

    Summary: Updated rsh packages fix security vulnerability

    Details: In NetKit through 0.17, rcp.c in the rcp client allows remote rsh servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. This is similar to CVE-2018-20685. (CVE-2019-7282) An issue was discovered in rcp in NetKit through 0.17. For an rcp operation, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned. A malicious rsh server (or Man-in-The-Middle attacker) can overwrite arbitrary files in a directory on the rcp client machine. This is similar to CVE-2019-6111. (CVE-2019-7283).

    References: https://advisories.mageia.org/MGASA-2021-0525.html, https://bugs.mageia.org/show_bug.cgi?id=29675, https://www.debian.org/lts/security/2021/dla-2822

    Affected packages

    Package

    Name: rsh

    Purl: pkg:rpm/mageia/rsh?arch=source&distro=mageia-8

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.17-36.1.mga8

    Affected versions

    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
    MGASA-2021-0525 | CVE-DB