CVE-2021-3696

EUVD-2021-26981
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.5 MEDIUM
LOCAL
HIGH
LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 29%
Affected Products (NVD)
VendorProductVersion
gnugrub2
2.00 ≤
𝑥
< 2.12
redhatdeveloper_tools
1.0
redhatopenshift
3.0
redhatenterprise_linux
8.0
redhatenterprise_linux
8.1
redhatenterprise_linux
8.4
redhatenterprise_linux
9.0
redhatenterprise_linux_eus
8.2
redhatenterprise_linux_eus
8.4
redhatenterprise_linux_eus
8.6
redhatenterprise_linux_eus
9.0
redhatenterprise_linux_for_power_little_endian
8.0
redhatenterprise_linux_for_power_little_endian
9.0
redhatenterprise_linux_for_power_little_endian_eus
8.2
redhatenterprise_linux_for_power_little_endian_eus
8.4
redhatenterprise_linux_for_power_little_endian_eus
8.6
redhatenterprise_linux_for_power_little_endian_eus
9.0
redhatenterprise_linux_server_aus
8.2
redhatenterprise_linux_server_aus
8.4
redhatenterprise_linux_server_aus
8.6
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
8.1
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
8.2
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
8.4
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
8.6
redhatenterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
9.0
redhatenterprise_linux_server_tus
8.2
redhatenterprise_linux_server_tus
8.4
redhatenterprise_linux_server_tus
8.6
redhatopenshift_container_platform
4.6
redhatopenshift_container_platform
4.9
redhatopenshift_container_platform
4.10
redhatcodeready_linux_builder
-
netappontap_select_deploy_administration_utility
-
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
grub2
bookworm
2.06-13+deb12u1
fixed
bookworm (security)
2.06-13+deb12u1
fixed
bullseye
2.06-3~deb11u6
fixed
bullseye (security)
2.06-3~deb11u6
fixed
jessie
ignored
sid
2.12-5
fixed
stretch
ignored
trixie
2.12-5
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
grub2
bionic
not-affected
focal
not-affected
impish
ignored
jammy
not-affected
kinetic
not-affected
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
not-affected
xenial
not-affected
grub2-signed
bionic
Fixed 1.187.3~18.04.1
released
focal
Fixed 1.187.3~20.04.1
released
jammy
Fixed 1.187.3~22.04.1
released
kinetic
ignored
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
needed
xenial
needed
grub2-unsigned
bionic
Fixed 2.06-2ubuntu14.1
released
focal
Fixed 2.06-2ubuntu14.1
released
jammy
Fixed 2.06-2ubuntu14.1
released
kinetic
ignored
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
dne
xenial
needed
Common Weakness Enumeration
References
https://bugzilla.redhat.com/show_bug.cgi?id=1991686
https://security.gentoo.org/glsa/202209-12
https://security.netapp.com/advisory/ntap-20220930-0001/
https://bugzilla.redhat.com/show_bug.cgi?id=1991686
https://security.gentoo.org/glsa/202209-12
https://security.netapp.com/advisory/ntap-20220930-0001/