QID 239526

Date Published: 2021-08-05

QID 239526: Red Hat Update for glibc (RHSA-2021:2998)

The glibc packages provide the standard C libraries (libc), POSIX thread libraries (libpthread), standard math libraries (libm), and the name service cache daemon (nscd)
used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly.

Security Fix(es): glibc: stack corruption from crafted input in cosl, sinl, sincosl, and tanl functions (CVE-2020-10029) glibc: stack-based buffer overflow if the input to any of the printf family of functions is an 80-bit long double with a non-canonical bit pattern (CVE-2020-29573)

Affected Products:

Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.7 x86_64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.7 s390x
Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.7 ppc64
Red Hat Enterprise Linux EUS Compute Node 7.7 x86_64
Red Hat Enterprise Linux Server - AUS 7.7 x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.7 ppc64le
Red Hat Enterprise Linux Server - TUS 7.7 x86_64
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.7 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.7 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 High - 7.5 severity.
  • CVSS V2 rated as Medium - 5 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-2021:2998 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239526

    CVE-2020-10029 | CVE-2020-29573 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:2998 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:2998?language=en
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