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CVE-2023-40547

Shim: rce in http boot support may lead to secure boot bypass PUBLISHED

Description (CNA)

A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.

Affected (CNA)

Vendor / productVersions
Red Hat / Red Hat Enterprise Linux 7unaffected 0:15.8-3.el7 before *
Red Hat / Red Hat Enterprise Linux 7unaffected 0:15.8-1.el7 before *
Red Hat / Red Hat Enterprise Linux 8unaffected 0:15.8-4.el8_9 before *
Red Hat / Red Hat Enterprise Linux 8.2 Advanced Update Supportunaffected 0:15.8-2.el8_2 before *
Red Hat / Red Hat Enterprise Linux 8.2 Telecommunications Update Serviceunaffected 0:15.8-2.el8_2 before *
Red Hat / Red Hat Enterprise Linux 8.2 Update Services for SAP Solutionsunaffected 0:15.8-2.el8_2 before *
Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 0:15.8-2.el8_4 before *
Red Hat / Red Hat Enterprise Linux 8.4 Telecommunications Update Serviceunaffected 0:15.8-2.el8_4 before *
Red Hat / Red Hat Enterprise Linux 8.4 Update Services for SAP Solutionsunaffected 0:15.8-2.el8_4 before *
Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Supportunaffected 0:15.8-2.el8_6 before *
Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Supportunaffected 0:15.8-2.el8 before *
Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Supportunaffected 0:15.8-2.el8 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:15.8-4.el9_3 before *
Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Supportunaffected 0:15.8-3.el9 before *
Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Supportunaffected 0:15.8-2.el9 before *
Red Hat / Red Hat Enterprise Linux 9.0 Extended Update Supportunaffected 0:15.8-2.el9 before *
Red Hat / Red Hat Enterprise Linux 9.2 Extended Update Supportunaffected 0:15.8-3.el9_2 before *

CWE

CWE-787

References

ADP enrichment

CVE

No English description supplied.

CISA-ADP

No English description supplied.

No references supplied.