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Echo: openssl-1.1.1c: security update to 1.1.1c+e1openssl-1.1.1g: security update to 1.1.1g+e1openssl-1.1.1k: security update to 1.1.1k+e1openssl-3.0.9: security update to 3.0.9+e1openssl-3.1.0: security update to 3.1.0+e1

high Tenable Cloud Security Plugin ID 478582

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Issue summary: The POLY1305 MAC (message authentication code) implementation contains a bug that might
 corrupt the internal state of applications on the Windows 64 platform when running on newer X86_64
 processors supporting the AVX512-IFMA instructions. Impact summary: If in an application that uses the
 OpenSSL library an attacker can influence whether the POLY1305 MAC algorithm is used, the application
 state might be corrupted with various application dependent consequences. The POLY1305 MAC (message
 authentication code) implementation in OpenSSL does not save the contents of non-volatile XMM registers on
 Windows 64 platform when calculating the MAC of data larger than 64 bytes. Before returning to the caller
 all the XMM registers are set to zero rather than restoring their previous content. The vulnerable code is
 used only on newer x86_64 processors supporting the AVX512-IFMA instructions. The consequences of this
 kind of internal application state corruption can be various - from no consequences, if the calling
 application does not depend on the contents of non-volatile XMM registers at all, to the worst
 consequences, where the attacker could get complete control of the application process. However given the
 contents of the registers are just zeroized so the attacker cannot put arbitrary values inside, the most
 likely consequence, if any, would be an incorrect result of some application dependent calculations or a
 crash leading to a denial of service. The POLY1305 MAC algorithm is most frequently used as part of the
 CHACHA20-POLY1305 AEAD (authenticated encryption with associated data) algorithm. The most common usage of
 this AEAD cipher is with TLS protocol versions 1.2 and 1.3 and a malicious client can influence whether
 this AEAD cipher is used by the server. This implies that server applications using OpenSSL can be
 potentially impacted. However we are currently not aware of any concrete application that would be
 affected by this issue therefore we consider this a Low severity security issue. As a workaround the
 AVX512-IFMA instructions support can be disabled at runtime by setting the environment variable
 OPENSSL_ia32cap: OPENSSL_ia32cap=:~0x200000 The FIPS provider is not affected by this issue.
 (CVE-2023-4807)

Solution

Update the openssl-1.1.1c library and its related packages to version 1.1.1c+e1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2023-4807

Plugin Details

Severity: High

ID: 478582

Version: Revision 1.1

Type: Local

Published: 11/5/2026

Updated: 11/5/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.86

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2023-4807

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 11/5/2026

Vulnerability Publication Date: 9/8/2023

Reference Information

CVE: CVE-2023-4807