CVE-2023-40549

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.2 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
redhatCNA
6.2 MEDIUM
LOCAL
LOW
NONE
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVEADP
---
---
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 5%
VendorProductVersion
redhatshim
𝑥
< 15.8
redhatenterprise_linux
8.0
redhatenterprise_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
shim
bullseye
15.8-1~deb11u1
fixed
bookworm
15.8-1~deb12u1
fixed
trixie
15.8-1
fixed
sid
15.8-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
secureboot-db
oracular
not-affected
noble
not-affected
mantic
not-affected
lunar
ignored
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
shim
oracular
Fixed 15.8-0ubuntu1
released
noble
Fixed 15.8-0ubuntu1
released
mantic
ignored
lunar
ignored
jammy
needed
focal
needed
bionic
needs-triage
xenial
ignored
trusty
ignored
shim-signed
oracular
Fixed 1.58
released
noble
Fixed 1.58
released
mantic
ignored
lunar
ignored
jammy
needed
focal
needed
bionic
needs-triage
xenial
ignored
trusty
ignored