UBUNTU-CVE-2023-2977

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    UBUNTU-CVE-2023-2977

    Published: 1 Jun 2023Last Modified: 4 Feb 2026
    Upstream:
    CVE-2023-2977

    Summary:

    Details: A vulnerbility was found in OpenSC. This security flaw cause a buffer overrun vulnerability in pkcs15 cardos_have_verifyrc_package. The attacker can supply a smart card package with malformed ASN1 context. The cardos_have_verifyrc_package function scans the ASN1 buffer for 2 tags, where remaining length is wrongly caculated due to moved starting pointer. This leads to possible heap-based buffer oob read. In cases where ASAN is enabled while compiling this causes a crash. Further info leak or more damage is possible.

    References: https://ubuntu.com/security/CVE-2023-2977, https://github.com/OpenSC/OpenSC/issues/2785, https://github.com/OpenSC/OpenSC/pull/2787, https://www.cve.org/CVERecord?id=CVE-2023-2977, https://ubuntu.com/security/notices/USN-7346-1, https://ubuntu.com/security/notices/USN-7346-3

    Affected packages

    Package

    Name: opensc

    Purl: pkg:deb/ubuntu/[email protected]+esm2?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.15.0-1ubuntu1+esm2

    Affected versions

    0.15.0-1ubuntu1
    0.15.0-1ubuntu1+esm1

    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
    UBUNTU-CVE-2023-2977 | CVE-DB