QID 239681

Date Published: 2021-10-20

QID 239681: Red Hat Update for httpd (RHSA-2021:3856)

The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.

Security Fix(es): httpd: mod_proxy: SSRF via a crafted request uri-path containing "unix:" (CVE-2021-40438)

Affected Products:

Red Hat Enterprise Linux Server 7 x86_64
Red Hat Enterprise Linux Server - AUS 7.7 x86_64
Red Hat Enterprise Linux Server - AUS 7.6 x86_64
Red Hat Enterprise Linux Server - AUS 7.4 x86_64
Red Hat Enterprise Linux Server - AUS 7.3 x86_64
Red Hat Enterprise Linux Server - AUS 7.2 x86_64
Red Hat Enterprise Linux Workstation 7 x86_64
Red Hat Enterprise Linux Desktop 7 x86_64
Red Hat Enterprise Linux for IBM z Systems 7 s390x
Red Hat Enterprise Linux for Power, big endian 7 ppc64
Red Hat Enterprise Linux for Scientific Computing 7 x86_64
Red Hat Enterprise Linux for Power, little endian 7 ppc64le
Red Hat Enterprise Linux Server - TUS 7.7 x86_64
Red Hat Enterprise Linux Server - TUS 7.6 x86_64
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.7 ppc64le
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.6 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.7 x86_64
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.6 x86_64

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as Critical - 9 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.

    Refer to Red Hat security advisory RHSA-2021:3856 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239681

    CVE-2021-40438 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:3856 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:3856?language=en
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