csaf_opensuse - opensuse-su-2021:0462-1

Vulnerability from csaf_opensuse

Published

2021-03-22 11:05

Modified

2021-03-22 11:05

Summary

Security update for grub2

Notes

Title of the patch

Security update for grub2

Description of the patch

This update for grub2 fixes the following issues: grub2 implements the new 'SBAT' method for SHIM based secure boot revocation. (bsc#1182057) - CVE-2020-25632: Fixed a use-after-free in rmmod command (bsc#1176711) - CVE-2020-25647: Fixed an out-of-bound write in grub_usb_device_initialize() (bsc#1177883) - CVE-2020-27749: Fixed a stack buffer overflow in grub_parser_split_cmdline (bsc#1179264) - CVE-2020-27779, CVE-2020-14372: Disallow cutmem and acpi commands in secure boot mode (bsc#1179265 bsc#1175970) - CVE-2021-20225: Fixed a heap out-of-bounds write in short form option parser (bsc#1182262) - CVE-2021-20233: Fixed a heap out-of-bound write due to mis-calculation of space required for quoting (bsc#1182263) - Fixed chainloading windows on dual boot machine (bsc#1183073) This update was imported from the SUSE:SLE-15-SP2:Update update project.

Patchnames

openSUSE-2021-462

CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).

JSON

To clipboard

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cve-2020-25632

Vulnerability from cvelistv5

Published

2021-03-03 16:40

Modified

2024-08-04 15:40

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a module used as a dependency without checking if any other dependent module is still loaded leading to a use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1879577	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
	https://security.gentoo.org/glsa/202104-05	vendor-advisory, x_refsource_GENTOO
	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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cve-2020-27749

Vulnerability from cvelistv5

Published

2021-03-03 16:40

Modified

2024-08-04 16:18

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage, without sufficient bounds checking. If the function is called with a command line that references a variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack frame and control execution which could also circumvent Secure Boot protections. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1899966	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
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	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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cve-2020-27779

Vulnerability from cvelistv5

Published

2021-03-03 16:40

Modified

2024-08-04 16:25

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent SecureBoot protections after proper triage about grub's memory layout. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1900698	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
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	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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cve-2020-14372

Vulnerability from cvelistv5

Published

2021-03-03 16:40

Modified

2024-08-04 12:46

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability is to data confidentiality and integrity, as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1873150	x_refsource_MISC
	https://access.redhat.com/security/vulnerabilities/RHSB-2021-003	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20210416-0004/	x_refsource_CONFIRM
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
	https://security.gentoo.org/glsa/202104-05	vendor-advisory, x_refsource_GENTOO

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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cve-2020-25647

Vulnerability from cvelistv5

Published

2021-03-03 16:40

Modified

2024-08-04 15:40

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are read with very little bounds checking and assumes the USB device is providing sane values. If properly exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1886936	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
	https://security.gentoo.org/glsa/202104-05	vendor-advisory, x_refsource_GENTOO
	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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cve-2021-20225

Vulnerability from cvelistv5

Published

2021-03-03 16:44

Modified

2024-08-03 17:30

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1924696	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
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	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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cve-2021-20233

Vulnerability from cvelistv5

Published

2021-03-03 16:44

Modified

2024-08-03 17:37

Severity ?

Summary

A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs a length calculation on the assumption that expressing a quoted single quote will require 3 characters, while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

▼	URL	Tags
	https://bugzilla.redhat.com/show_bug.cgi?id=1926263	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/	vendor-advisory, x_refsource_FEDORA
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	https://security.netapp.com/advisory/ntap-20220325-0001/	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	grub2	Version: grub 2.06

Show details on NVD website

JSON

To clipboard

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                  },
                  {
                     name: "https://security.netapp.com/advisory/ntap-20220325-0001/",
                     refsource: "CONFIRM",
                     url: "https://security.netapp.com/advisory/ntap-20220325-0001/",
                  },
               ],
            },
         },
      },
   },
   cveMetadata: {
      assignerOrgId: "53f830b8-0a3f-465b-8143-3b8a9948e749",
      assignerShortName: "redhat",
      cveId: "CVE-2021-20233",
      datePublished: "2021-03-03T16:44:34",
      dateReserved: "2020-12-17T00:00:00",
      dateUpdated: "2024-08-03T17:37:22.631Z",
      state: "PUBLISHED",
   },
   dataType: "CVE_RECORD",
   dataVersion: "5.1",
}

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

Vulnerability from csaf_opensuse

cve-2020-25632

Vulnerability from cvelistv5

cve-2020-27749

Vulnerability from cvelistv5

cve-2020-27779

Vulnerability from cvelistv5

cve-2020-14372

Vulnerability from cvelistv5

cve-2020-25647

Vulnerability from cvelistv5

cve-2021-20225

Vulnerability from cvelistv5

cve-2021-20233

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature