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openSUSE: 2021:0463-2 Critical: Grub2 Memory Leak Exploit

opensuse
Calendar Grey March 22, 2021
Dist Opensuse Esm H88
Critical patch released for openSUSE grub2 tackling various vulnerabilities and essential repairs. Keep your systems safe!
An update that solves 7 vulnerabilities and has two fixes is now available

Description

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.

Topics%20covered

Topics Covered

security advisory security issue buffer overflow important system patch stack overflow important update openSUSE out-of-bounds write grub2

Patch

Patch Instructions:

To install this openSUSE Security Update use the SUSE recommended installation methods

like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- openSUSE Leap 15.2:

zypper in -t patch openSUSE-2021-462=1

Package List

- openSUSE Leap 15.2 (i586 x86_64):

grub2-2.04-lp152.7.22.7

grub2-branding-upstream-2.04-lp152.7.22.7

grub2-debuginfo-2.04-lp152.7.22.7

grub2-debugsource-2.04-lp152.7.22.7

- openSUSE Leap 15.2 (noarch):

grub2-i386-efi-2.04-lp152.7.22.7

grub2-i386-efi-debug-2.04-lp152.7.22.7

grub2-i386-pc-2.04-lp152.7.22.7

grub2-i386-pc-debug-2.04-lp152.7.22.7

grub2-i386-xen-2.04-lp152.7.22.7

grub2-snapper-plugin-2.04-lp152.7.22.7

grub2-systemd-sleep-plugin-2.04-lp152.7.22.7

grub2-x86_64-efi-2.04-lp152.7.22.7

grub2-x86_64-efi-debug-2.04-lp152.7.22.7

grub2-x86_64-xen-2.04-lp152.7.22.7

References

https://www.suse.com/security/cve/CVE-2020-14372.html

https://www.suse.com/security/cve/CVE-2020-25632.html

https://www.suse.com/security/cve/CVE-2020-25647.html

https://www.suse.com/security/cve/CVE-2020-27749.html

https://www.suse.com/security/cve/CVE-2020-27779.html

https://www.suse.com/security/cve/CVE-2021-20225.html

https://www.suse.com/security/cve/CVE-2021-20233.html

https://bugzilla.suse.com/1175970

https://bugzilla.suse.com/1176711

https://bugzilla.suse.com/1177883

https://bugzilla.suse.com/1179264

https://bugzilla.suse.com/1179265

https://bugzilla.suse.com/1182057

https://bugzilla.suse.com/1182262

https://bugzilla.suse.com/1182263

https://bugzilla.suse.com/1183073

Severity
critical
Lowest
Low
Medium
High
Critical

Announcement ID: openSUSE-SU-2021:0462-1
Rating: important
Affected Products: openSUSE Leap 15.2 ble.

Topics%20covered

Topics Covered

security advisory security issue buffer overflow important system patch stack overflow important update openSUSE out-of-bounds write grub2

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