Debian Security Bug TrackerDEBIANCVE:CVE-2020-14311CVE-2020-14311
6 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:P/A:P
0.001 Low
EPSS
Percentile
17.6%
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | grub2 | < 2.04-9 | grub2_2.04-9_all.deb |
| Debian | 11 | all | grub2 | < 2.04-9 | grub2_2.04-9_all.deb |
| Debian | 10 | all | grub2 | < 2.02+dfsg1-20+deb10u1 | grub2_2.02+dfsg1-20+deb10u1_all.deb |
| Debian | 999 | all | grub2 | < 2.04-9 | grub2_2.04-9_all.deb |
| Debian | 13 | all | grub2 | < 2.04-9 | grub2_2.04-9_all.deb |
Related
6 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
3.6 Low
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:L/Au:N/C:N/I:P/A:P
0.001 Low
EPSS
Percentile
17.6%