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Amazon Linux 2 : gcc (ALAS-2023-2245)

medium Nessus Plugin ID 181359

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Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

The version of gcc installed on the remote host is prior to 7.3.1-17. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2023-2245 advisory.

 - A failure in the -fstack-protector feature in GCC-based toolchains that target AArch64 allows an attacker to exploit an existing buffer overflow in dynamically-sized local variables in your application without this being detected. This stack-protector failure only applies to C99-style dynamically-sized local variables or those created using alloca(). The stack-protector operates as intended for statically-sized local variables. The default behavior when the stack-protector detects an overflow is to terminate your application, resulting in controlled loss of availability. An attacker who can exploit a buffer overflow without triggering the stack-protector might be able to change program flow control to cause an uncontrolled loss of availability or to go further and affect confidentiality or integrity.
 (CVE-2023-4039)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Run 'yum update gcc' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2023-2245.html

https://alas.aws.amazon.com/cve/html/CVE-2023-4039.html

https://alas.aws.amazon.com/faqs.html

Plugin Details

Severity: Medium

ID: 181359

File Name: al2_ALAS-2023-2245.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/13/2023

Updated: 9/21/2023

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.3

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2023-4039

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.3

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

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:gcc-gnat, p-cpe:/a:amazon:linux:cpp, p-cpe:/a:amazon:linux:gcc-c%2b%2b, p-cpe:/a:amazon:linux:libgccjit-devel, p-cpe:/a:amazon:linux:libitm, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:libgcc, p-cpe:/a:amazon:linux:libgo, p-cpe:/a:amazon:linux:libgfortran, p-cpe:/a:amazon:linux:libstdc%2b%2b, p-cpe:/a:amazon:linux:gcc-objc%2b%2b, p-cpe:/a:amazon:linux:gcc-gdb-plugin, p-cpe:/a:amazon:linux:libatomic, p-cpe:/a:amazon:linux:libmpx, p-cpe:/a:amazon:linux:libsanitizer, p-cpe:/a:amazon:linux:gcc-gfortran, p-cpe:/a:amazon:linux:libobjc, p-cpe:/a:amazon:linux:libgccjit, p-cpe:/a:amazon:linux:gcc-objc, p-cpe:/a:amazon:linux:gcc-plugin-devel, p-cpe:/a:amazon:linux:gcc-debuginfo, p-cpe:/a:amazon:linux:libgomp, p-cpe:/a:amazon:linux:gcc-base-debuginfo, p-cpe:/a:amazon:linux:gcc-go, p-cpe:/a:amazon:linux:libgnat, p-cpe:/a:amazon:linux:libquadmath, p-cpe:/a:amazon:linux:libcilkrts, p-cpe:/a:amazon:linux:libstdc%2b%2b-docs, p-cpe:/a:amazon:linux:gcc

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/8/2023

Vulnerability Publication Date: 9/8/2023

Reference Information

CVE: CVE-2023-4039