SUSE update for grub2
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2022-2601 CVE-2022-3775 |
| CWE-ID | CWE-787 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
SUSE Linux Enterprise Server Operating systems & Components / Operating system grub2-x86_64-xen Operating systems & Components / Operating system package or component grub2-x86_64-efi Operating systems & Components / Operating system package or component grub2-i386-pc Operating systems & Components / Operating system package or component grub2-debugsource Operating systems & Components / Operating system package or component grub2-debuginfo Operating systems & Components / Operating system package or component grub2 Operating systems & Components / Operating system package or component grub2-systemd-sleep-plugin Operating systems & Components / Operating system package or component grub2-snapper-plugin Operating systems & Components / Operating system package or component |
| Vendor | SUSE |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Out-of-bounds write
EUVDB-ID: #VU69394
Risk: Low
CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-2601
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows an attacker to bypass implemented security restrictions.
The vulnerability exists due to a boundary error within the grub_font_construct_glyph() function when handling pf2 font. An attacker with physical access to the affected system can trigger an out-of-bounds write and bypass secure boot restrictions.
Update the affected package grub2 to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server: 12-SP2-BCL
grub2-x86_64-xen: before 2.02-115.72.1
grub2-x86_64-efi: before 2.02-115.72.1
grub2-i386-pc: before 2.02-115.72.1
grub2-debugsource: before 2.02-115.72.1
grub2-debuginfo: before 2.02-115.72.1
grub2: before 2.02-115.72.1
grub2-systemd-sleep-plugin: before 2.02-115.72.1
grub2-snapper-plugin: before 2.02-115.72.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP2-BCL:*:*:*:*:*:*:*
- cpe:2.3:o:suse:grub2-x86_64-xen:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-x86_64-efi:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-i386-pc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-systemd-sleep-plugin:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-snapper-plugin:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20224144-1/
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Out-of-bounds write
EUVDB-ID: #VU69395
Risk: Low
CVSSv4.0: 0.6 [CVSS:4.0/AV:P/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2022-3775
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows an attacker to crash the system.
The vulnerability exists due to a boundary error when rendering certain unicode sequences in grub2 font code. An attacker with physical access to device can trigger an out-of-bounds write and perform a denial of service (DoS) attack.
Update the affected package grub2 to the latest version.
Vulnerable software versionsSUSE Linux Enterprise Server: 12-SP2-BCL
grub2-x86_64-xen: before 2.02-115.72.1
grub2-x86_64-efi: before 2.02-115.72.1
grub2-i386-pc: before 2.02-115.72.1
grub2-debugsource: before 2.02-115.72.1
grub2-debuginfo: before 2.02-115.72.1
grub2: before 2.02-115.72.1
grub2-systemd-sleep-plugin: before 2.02-115.72.1
grub2-snapper-plugin: before 2.02-115.72.1
CPE2.3- cpe:2.3:o:suse:suse_linux_enterprise_server:12-SP2-BCL:*:*:*:*:*:*:*
- cpe:2.3:o:suse:grub2-x86_64-xen:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-x86_64-efi:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-i386-pc:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debugsource:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-debuginfo:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-systemd-sleep-plugin:*:*:*:*:*:suse_linux:*:*
- cpe:2.3:o:suse:grub2-snapper-plugin:*:*:*:*:*:suse_linux:*:*
https://www.suse.com/support/update/announcement/2022/suse-su-20224144-1/
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
