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Google: dev-libs/openssl: security update to 18244.1.7

medium Tenable Cloud Security Plugin ID 450775

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 running on PowerPC CPU based platforms if the CPU provides
 vector instructions. Impact summary: If 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 for PowerPC CPUs restores the
 contents of vector registers in a different order than they are saved. Thus the contents of some of these
 vector registers are corrupted when returning to the caller. The vulnerable code is used only on newer
 PowerPC processors supporting the PowerISA 2.07 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 unless the compiler uses the vector
 registers for storing pointers, 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. If
 this cipher is enabled on the server a malicious client can influence whether this AEAD cipher is used.
 This implies that TLS 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. (CVE-2023-6129)

Solution

Update the dev-libs/openssl library and its related packages to version 18244.1.7 or later.

See Also

https://storage.googleapis.com/cos-oval-vulnerability-feed/cos-113.oval.xml.tar.gz

Plugin Details

Severity: Medium

ID: 450775

Version: Revision 1.1

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

Percentile: 95.85

Vendor

Vendor Severity: MEDIUM

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:N/AC:H/Au:N/C:N/I:P/A:C

CVSS Score Source: CVE-2023-6129

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 10/24/2023

Reference Information

CVE: CVE-2023-6129