Description
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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
- Debian / debian_linux9.0 – 9.0
- fedoraproject / fedora33 – 33
- fedoraproject / fedora34 – 34
- GnuPG / Libgcrypt1.8.8
- oracle / communications_cloud_native_core_binding_support_function1.11.0 – 1.11.0
- oracle / communications_cloud_native_core_network_function_cloud_native_environment1.10.0 – 1.10.0
- oracle / communications_cloud_native_core_network_function_cloud_native_environment1.9.0 – 1.9.0
- oracle / communications_cloud_native_core_network_repository_function1.14.0 – 1.14.0
- oracle / communications_cloud_native_core_network_repository_function1.15.0 – 1.15.0
- oracle / communications_cloud_native_core_network_repository_function1.15.1 – 1.15.1
- oracle / communications_cloud_native_core_network_slice_selection_function1.8.0 – 1.8.0
- oracle / communications_cloud_native_core_service_communication_proxy1.15.0 – 1.15.0
References
- MISChttps://dev.gnupg.org/T5328
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2021/06/msg00021.html
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7OAPCUGPF3VLA7QAJUQSL255D4ITVTL/
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BKKTOIGFW2SGN3DO2UHHVZ7MJSYN4AAB/
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuoct2021.html
- MISChttps://dev.gnupg.org/T5466
- MISChttps://dev.gnupg.org/T5305
- MISChttps://dev.gnupg.org/rCe8b7f10be275bcedb5fc05ed4837a89bfd605c61
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujan2022.html
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2022.html
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujul2022.html
- MISChttps://security.gentoo.org/glsa/202210-13
Updated 16m ago · 8 sources