CVE-2021-33560

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.
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*
cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.14.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:*

History

31 Oct 2022, 04:15

Type Values Removed Values Added
References
  • (GENTOO) https://security.gentoo.org/glsa/202210-13 -

25 Jul 2022, 18:15

Type Values Removed Values Added
References
  • (N/A) https://www.oracle.com/security-alerts/cpujul2022.html -

13 May 2022, 17:28

Type Values Removed Values Added
References (MISC) https://www.oracle.com/security-alerts/cpuapr2022.html - (MISC) https://www.oracle.com/security-alerts/cpuapr2022.html - Patch, Third Party Advisory
CPE cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:*

20 Apr 2022, 00:16

Type Values Removed Values Added
References
  • (MISC) https://www.oracle.com/security-alerts/cpuapr2022.html -

01 Mar 2022, 15:21

Type Values Removed Values Added
CPE cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.9.0:*:*:*:*:*:*:*
References (MISC) https://www.oracle.com/security-alerts/cpujan2022.html - (MISC) https://www.oracle.com/security-alerts/cpujan2022.html - Patch, Third Party Advisory

07 Feb 2022, 16:16

Type Values Removed Values Added
References
  • (MISC) https://www.oracle.com/security-alerts/cpujan2022.html -

01 Dec 2021, 21:07

Type Values Removed Values Added
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/ - Third Party Advisory (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/ - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/ - Third Party Advisory (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/ - Mailing List, Third Party Advisory
References (MISC) https://www.oracle.com/security-alerts/cpuoct2021.html - (MISC) https://www.oracle.com/security-alerts/cpuoct2021.html - Third Party Advisory
CPE cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.14.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

20 Oct 2021, 11:16

Type Values Removed Values Added
References
  • (MISC) https://www.oracle.com/security-alerts/cpuoct2021.html -

13 Sep 2021, 19:47

Type Values Removed Values Added
CPE cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/ - Third Party Advisory
References (MLIST) https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html - (MLIST) https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html - Mailing List, Third Party Advisory
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/ - Third Party Advisory

06 Sep 2021, 19:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/ -
Summary 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. (There is also an interoperability problem because the selection of the k integer value does not properly consider the differences between basic ElGamal encryption and generalized ElGamal encryption.) This, for example, affects use of ElGamal in OpenPGP. 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.

01 Jul 2021, 06:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/ -

30 Jun 2021, 05:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2021/06/msg00021.html -

15 Jun 2021, 15:39

Type Values Removed Values Added
References (MISC) https://dev.gnupg.org/T5466 - (MISC) https://dev.gnupg.org/T5466 - Release Notes, Vendor Advisory
References (MISC) https://dev.gnupg.org/T5328 - (MISC) https://dev.gnupg.org/T5328 - Vendor Advisory
References (MISC) https://dev.gnupg.org/T5305 - (MISC) https://dev.gnupg.org/T5305 - Release Notes, Vendor Advisory
References (MISC) https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61 - (MISC) https://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61 - Patch, Vendor Advisory
CWE CWE-203
CVSS v2 : unknown
v3 : unknown
v2 : 5.0
v3 : 7.5
CPE cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*

08 Jun 2021, 11:37

Type Values Removed Values Added
New CVE

Information

Published : 2021-06-08 11:15

Updated : 2024-02-04 21:47


NVD link : CVE-2021-33560

Mitre link : CVE-2021-33560

CVE.ORG link : CVE-2021-33560


JSON object : View

Products Affected

oracle

  • communications_cloud_native_core_binding_support_function
  • communications_cloud_native_core_network_repository_function
  • communications_cloud_native_core_network_slice_selection_function
  • communications_cloud_native_core_network_function_cloud_native_environment
  • communications_cloud_native_core_service_communication_proxy

gnupg

  • libgcrypt

debian

  • debian_linux

fedoraproject

  • fedora
CWE
CWE-203

Observable Discrepancy