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cve[email protected]CVE-2021-33560
HistoryJun 08, 2021 - 11:15 a.m.

CVE-2021-33560

2021-06-0811:15:00
CWE-203
[email protected]
web.nvd.nist.gov
354
15
libgcrypt
cve-2021-33560
elgamal encryption
exponent blinding
side-channel attack
openpgp
nvd

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

6.4 Medium

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

61.7%

JSON

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

CPENameOperatorVersion
gnupg:libgcryptgnupg libgcryptlt1.9.3
gnupg:libgcryptgnupg libgcryptlt1.8.8
debian:debian_linuxdebian debian linuxeq9.0
fedoraproject:fedorafedoraproject fedoraeq33
fedoraproject:fedorafedoraproject fedoraeq34
oracle:communications_cloud_native_core_network_repository_functionoracle communications cloud native core network repository functioneq1.14.0
oracle:communications_cloud_native_core_network_function_cloud_native_environmentoracle communications cloud native core network function cloud native environmenteq1.9.0
oracle:communications_cloud_native_core_network_slice_selection_functionoracle communications cloud native core network slice selection functioneq1.8.0
oracle:communications_cloud_native_core_network_repository_functionoracle communications cloud native core network repository functioneq1.15.0
oracle:communications_cloud_native_core_network_function_cloud_native_environmentoracle communications cloud native core network function cloud native environmenteq1.10.0
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7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

6.4 Medium

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

0.002 Low

EPSS

Percentile

61.7%

JSON
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