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Ubuntu.comUB:CVE-2022-3775HistoryDec 19, 2022 - 12:00 a.m.
CVE-2022-3775
2022-12-1900:00:00
ubuntu.com
ubuntu.com
17
grub2
unicode sequences
memory corruption
availability issues
out-of-bounds write
security fixes
secure boot
key revocation
evil housekeeper attacks
7.1 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%
When rendering certain unicode sequences, grub2’s font code doesn’t proper
validate if the informed glyph’s width and height is constrained within
bitmap size. As consequence an attacker can craft an input which will lead
to a out-of-bounds write into grub2’s heap, leading to memory corruption
and availability issues. Although complex, arbitrary code execution could
not be discarded.
Bugs
Notes
| Author | Note |
|---|---|
| eslerm | grub2-unsigned contains Secure Boot security fixes the grub2 package unlikely affects Ubuntu’s Secure Boot grub2 and grub2-unsigned should have same major version Ubuntu Secure Boot and ESM do not cover i386 trusty’s GA kernel cannot handle new versions of grub |
| eslerm | Note that key revocation is required to protect against evil housekeeper attacks (such as BlackLotus) |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | grub2-signed | < 1.187.3~18.04.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | grub2-signed | < 1.187.3~20.04.1 | UNKNOWN |
| ubuntu | 22.04 | noarch | grub2-signed | < 1.187.3~22.04.1 | UNKNOWN |
| ubuntu | 14.04 | noarch | grub2-signed | < any | UNKNOWN |
| ubuntu | 16.04 | noarch | grub2-signed | < any | UNKNOWN |
| ubuntu | 18.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14.1 | UNKNOWN |
| ubuntu | 20.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14 | UNKNOWN |
| ubuntu | 22.04 | noarch | grub2-unsigned | < 2.06-2ubuntu14 | UNKNOWN |
| ubuntu | 23.04 | noarch | grub2-unsigned | < 2.06-2ubuntu15 | UNKNOWN |
| ubuntu | 16.04 | noarch | grub2-unsigned | < any | UNKNOWN |
Related
cbl_mariner
cbl_mariner
CVE-2022-3775 affecting package grub2 for versions less than 2.06-10
2023-06-27 20:56:13
CVE-2022-3775 affecting package grub2 2.06~rc1-9
2023-03-02 04:18:34
CVE-2022-3775 affecting package grub2 for versions less than 2.06-14
2024-03-19 17:21:46
prion
prion
Heap overflow
2022-12-19 20:15:00
openvas
openvas
Huawei EulerOS: Security Advisory for grub2 (EulerOS-SA-2023-1595)
2023-04-13 00:00:00
SUSE: Security Advisory (SUSE-SU-2022:4142-1)
2022-11-22 00:00:00
SUSE: Security Advisory (SUSE-SU-2022:4302-1)
2022-12-02 00:00:00
veracode
veracode
Denial Of Service (DoS)
2022-11-20 23:05:07
redhatcve
redhatcve
CVE-2022-3775
2022-11-15 18:43:55
cvelist
cvelist
CVE-2022-3775
2022-12-19 00:00:00
nessus
nessus
EulerOS 2.0 SP8 : grub2 (EulerOS-SA-2023-1595)
2023-04-13 00:00:00
SUSE SLES15 Security Update : grub2 (SUSE-SU-2022:4142-1)
2022-11-22 00:00:00
Debian DSA-5280-1 : grub2 - security update
2022-11-16 00:00:00
nvd
nvd
CVE-2022-3775
2022-12-19 20:15:11
debiancve
debiancve
CVE-2022-3775
2022-12-19 20:15:11
cve
cve
CVE-2022-3775
2022-12-19 20:15:11
debian
debian
[SECURITY] [DLA 3190-1] grub2 security update
2022-11-16 09:12:12
[SECURITY] [DSA 5280-1] grub2 security update
2022-11-15 19:50:06
[SECURITY] [DLA 3190-2] grub2 security update
2022-12-10 08:22:59
osv
osv
grub2 - security update
2022-11-16 00:00:00
Moderate: grub2 security update
2023-02-14 00:00:00
Moderate: grub2 security update
2023-01-09 00:00:00
ibm
ibm
fedora
fedora
[SECURITY] Fedora 35 Update: grub2-2.06-14.fc35
2022-12-01 01:39:11
[SECURITY] Fedora 36 Update: grub2-2.06-57.fc36
2022-11-27 01:37:59
[SECURITY] Fedora 37 Update: grub2-2.06-63.fc37
2022-11-18 01:18:26
rocky
rocky
grub2 security update
2023-01-09 14:23:31
grub2 security update
2023-02-16 06:35:52
redhat
redhat
(RHSA-2022:8494) Moderate: grub2 security update
2022-11-16 10:37:16
(RHSA-2023:0048) Moderate: grub2 security and bug fix update
2023-01-09 14:22:50
(RHSA-2023:0752) Moderate: grub2 security update
2023-02-14 09:02:50
redos
redos
ROS-20240403-05
2024-04-03 00:00:00
rosalinux
rosalinux
Advisory ROSA-SA-2024-2348
2024-02-20 08:52:02
almalinux
almalinux
Moderate: grub2 security update
2023-01-09 00:00:00
Moderate: grub2 security update
2023-02-14 00:00:00
oraclelinux
oraclelinux
grub2 security update
2023-01-12 00:00:00
grub2 security update
2023-01-25 00:00:00
grub2 security update
2023-06-13 00:00:00
gentoo
gentoo
GRUB: Multiple Vulnerabilities
2023-11-25 00:00:00
photon
photon
Important Photon OS Security Update - PHSA-2022-4.0-0303
2022-12-21 00:00:00
Important Photon OS Security Update - PHSA-2022-3.0-0507
2022-12-21 00:00:00
amazon
amazon
Important: grub2
2023-07-17 17:40:00
ubuntu
ubuntu
GRUB2 vulnerabilities
2023-09-08 00:00:00
hp
hp
HP ThinPro 8.0 SP 7 Security Updates
2024-01-26 00:00:00
HP ThinPro 8.0 SP 8 Security Updates
2024-03-01 00:00:00
avleonov
avleonov
7.1 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8 High
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
5.1%
Related for UB:CVE-2022-3775