UBUNTU-CVE-2021-31320

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    UBUNTU-CVE-2021-31320

    Published: 18 May 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-31320
    Aliases:
    USN-7198-1

    Summary:

    Details: Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Heap Buffer Overflow in the VGradientCache::generateGradientColorTable function of their custom fork of the rlottie library. A remote attacker might be able to overwrite heap memory out-of-bounds on a victim device via a malicious animated sticker.

    References: https://ubuntu.com/security/CVE-2021-31320, https://www.shielder.it/advisories/telegram-rlottie-vgradientcache-generategradientcolortable-heap-buffer-overflow/, https://www.cve.org/CVERecord?id=CVE-2021-31320, https://ubuntu.com/security/notices/USN-7198-1

    Affected packages

    Package

    Name: rlottie

    Purl: pkg:deb/ubuntu/rlottie@0~git20200305.a717479+dfsg-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0~git20200305.a717479+dfsg-1ubuntu0.1~esm1

    Affected versions

    0~git20190721.24346d0+dfsg-2

    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-2021-31320 | CVE-DB