USN-5194-1

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    USN-5194-1

    Published: 15 Dec 2021Last Modified: 22 Apr 2026

    Summary: olm vulnerability

    Details: Denis Kasak discovered that Olm was not verifying the length of input being processed by the olm_pk_decrypt module, which introduced a stack-based buffer overflow vulnerability to the library. An attacker could use this to cause a denial of service (application crash) or possibly execute arbitrary code.

    References: https://ubuntu.com/security/notices/USN-5194-1, https://ubuntu.com/security/CVE-2021-34813

    Affected packages

    Package

    Name: olm

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.1.3+dfsg-2ubuntu0.1~esm1

    Affected versions

    3.1.3+dfsg-2
    3.1.3+dfsg-2build1
    3.1.3+dfsg-2build2

    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
    USN-5194-1 | CVE-DB