Vulnerability in Gnupg Libgcrypt
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 u…
EPSS: 0.023 (81.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Gnupg Libgcrypt
- Oracle Communications_cloud_native_core_binding_support_function — versions 1.11.0
- Oracle Communications_cloud_native_core_network_function_cloud_native_environment — versions 1.9.0, 1.10.0
- Oracle Communications_cloud_native_core_network_repository_function — versions 1.14.0, 1.15.0, 1.15.1
- Oracle Communications_cloud_native_core_network_slice_selection_function — versions 1.8.0
- Oracle Communications_cloud_native_core_service_communication_proxy — versions 1.15.0
- Debian Debian_linux — versions 9.0
- Fedoraproject Fedora — versions 33, 34
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Vendor Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (vendor-advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Release Notes, Vendor Advisory)
- cve@mitre.org (Patch, Vendor Advisory)
- cve@mitre.org (Patch, Third Party Advisory)
- cve@mitre.org (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33560?
- CVE-2021-33560 is a high-severity vulnerability in Gnupg Libgcrypt, classified under Observable Discrepancy. CVSS score: 7.5/10. Published 2021-06-08.
- How severe is CVE-2021-33560?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-33560 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.