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Message-ID: <CAKx+4-qHV2QzfTZKLt23E2jgnLvnncdAVUmqqdRKZhJFLV3tMA@mail.gmail.com>
Date: Tue, 23 Jun 2020 16:52:12 +0530
From: Rohit Keshri <rkeshri@...hat.com>
To: oss-security@...ts.openwall.com
Subject: CVE-2020-10769 kernel: Buffer over-read in
crypto_authenc_extractkeys() when a payload longer than 4 bytes is not aligned.
Hello Team,
Red Hats kernel has a flaw in Authenticated Encryption with Associated Data
(AEAD), a form of encryption technique which
simultaneously assures the confidentiality and authenticity of data with
below details.
A buffer over-read flaw was found in crypto_authenc_extractkeys in
crypto/authenc.c in the IPsec Cryptographic algorithm’s
module, authenc. When a payload is 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.
'CVE-2020-10769' was assigned by Red Hat Inc.
Upstream fix:
https://lkml.org/lkml/2019/1/21/675
Thank you
..
Rohit Keshri / Red Hat Product Security Team
PGP: OX01BC 858A 07B7 15C8 EF33 BFE2 2EEB 0CBC 84A4 4C2D
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