CVE-2020-10769

Description

A buffer over-read flaw was found in RH kernel versions before 5.0 in crypto_authenc_extractkeys in crypto/authenc.c in the IPsec Cryptographic algorithm's module, authenc. When a payload longer than 4 bytes, and is not following 4-byte alignment boundary guidelines, it causes a buffer over-read threat, leading to a system crash. This flaw allows a local attacker with user privileges to cause a denial of service.

CVSS Metrics

• v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
• v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 0.18%• Percentile: 39%

Techniques & Countermeasures

• CWE-125•Out-of-bounds Read

  The product reads data past the end, or before the beginning, of the intended buffer.

Affected Systems

• opensuse•leap

  15.1

• redhat•enterprise_linux

  7.0

References (4)

• https://bugzilla.redhat.com/show_bug.cgi?id=1708775%3B
• https://lkml.org/lkml/2019/1/21/675
• http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00009.html
• https://www.oracle.com/security-alerts/cpuApr2021.html