QID 239242

Date Published: 2021-04-26

QID 239242: Red Hat Update for gnutls and nettle (RHSA-2021:1245)

The gnutls packages provide the GNU Transport Layer Security (GnuTLS)
library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.Nettle is a cryptographic library that is designed to fit easily in almost any context: In crypto toolkits for object-oriented languages, such as C++, Python, or Pike, in applications like LSH or GNUPG, or even in kernel space.

Security Fix(es): nettle: Out of bounds memory access in signature verification (CVE-2021-20305)

Affected Products:

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1 x86_64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.1 s390x
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1 ppc64le
Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.1 aarch64
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.1 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1 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 - 8.1 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-2021:1245 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239242

    CVE-2021-20305 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:1245 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:1245?language=en
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