QID 239881

Date Published: 2021-11-16

QID 239881: Red Hat Update for lasso (RHSA-2021:4325)

the lasso packages provide the lasso library that implements the liberty alliance single sign-on standards, including the saml and saml2 specifications.
It allows handling of the whole life-cycle of saml-based federations and provides bindings for multiple languages.

Security Fix(es):
  • lasso: xml signature wrapping vulnerability when parsing saml responses (cve-2021-28091)

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



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

    Refer to Red Hat security advisory RHSA-2021:4325 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239881

    CVE-2021-28091 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4325 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4325
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