RLSA-2021:2988

    Dashboard / Vulnerabilities / RLSA-2021:2988

    RLSA-2021:2988

    Published: 2 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-36740

    Summary: Important: varnish:6 security update

    Details: Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don't have to create the same web page over and over again, giving the website a significant speed up. Security Fix(es): * varnish: HTTP/2 request smuggling attack via a large Content-Length header for a POST request (CVE-2021-36740) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

    References: https://errata.rockylinux.org/RLSA-2021:2988, https://bugzilla.redhat.com/show_bug.cgi?id=1982409

    Affected packages

    Package

    Name: varnish

    Purl: pkg:rpm/rocky-linux/varnish?distro=rocky-linux-8-4-legacy&epoch=0

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0:6.0.6-2.module+el8.3.0+179+20b582cc

    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
    RLSA-2021:2988 | CVE-DB