QID 239785

Date Published: 2021-11-10

QID 239785: Red Hat Update for gnutls and nettle security (RHSA-2021:4451)

the gnutls packages provide the gnu transport layer security (gnutls) library, which implements cryptographic algorithms and protocols such as ssl, tls, and dtls.

Security Fix(es):
  • nettle: remote crash in rsa decryption via manipulated ciphertext (cve-2021-3580)
  • gnutls: use after free in client key_share extension (cve-2021-20231)
  • gnutls: use after free in client_send_params in lib/ext/pre_shared_key.c (cve-2021-20232)

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for ibm z systems 8 s390x
  • Red Hat enterprise linux for power, little endian 8 ppc64le
  • Red Hat enterprise linux for arm 64 8 aarch64



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 - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Upgrade to the latest packages which contain a patch.

    Refer to Refer to :
    Applying Package Updates to RHEL system     for details.

    Refer to Red Hat security advisory RHSA-2021:4451 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239785

    CVE-2021-3580 | CVE-2021-20231 | CVE-2021-20232 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4451 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4451
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