Detections
Analytics
Amazon Linux 2 : aspell (ALAS-2026-4022)
low Nessus Plugin ID 371763
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of aspell installed on the remote host is prior to 0.60.6.1-22. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-4022 advisory.A flaw was found in Aspell. An attacker could achieve arbitrary code execution or cause a Denial of Service (DoS) by convincing a user to process a specially crafted dictionary file. This issue occurs due to an integer calculation error during buffer capacity checks in the read-only dictionary loader, leading to a heap-based buffer overflow. (CVE-2026-103658)
GNU Aspell prezip-bin contains a heap-based buffer overflow vulnerability in the decompressor in prog/prezip.c. The decompressor does not properly check buffer space, so a crafted compressed file can cause out-of-bounds read and write operations on the heap. An attacker who convinces a user to process a malicious compressed file with prezip-bin can trigger memory corruption, leading to a processs crash.
This issue was fixed in commit 15b188437f9e0192d4ac4472ad66a4e2f62a782f which will be released in version 0.60.8.3. (CVE-2026-75818)
GNU Aspell contains an out-of-bounds read vulnerability in ReadOnlyDict::load() in readonly_ws.cpp. When loading a binary .rws dictionary file, it uses offset fields from the file header as byte indices into a heap buffer without validating their bounds. An attacker can trigger this by convincing a user to run aspell with a crafted dictionary file supplied through --master, --dict-dir, or configuration options, leading to heap memory disclosure or a denial of service via application crash.
This issue was fixed in commit 941953b25031bc9104e83f58e138a664b8dedc3f which will be released in version 0.60.8.3. (CVE-2026-75819)
GNU Aspell contains an integer truncation vulnerability in the WritableDict::add() function in modules/speller/default/writable.cpp. When loading a personal wordlist, the word length is stored as a single byte, causing truncation for words whose length is a multiple of 256. This leads to heap corruption. An attacker can exploit this by convincing a user to run aspell with a crafted personal wordlist containing such a word, resulting in denial of service.
This issue was fixed in commit 782ce94e4dc71eaec4ee1bd945eb3b9c47c5387d which will be released in version 0.60.8.3. (CVE-2026-75820)
Tenable has extracted the preceding description block directly from the tested product security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update aspell' or or 'yum update --advisory ALAS2-2026-4022' to update your system.See Also
https://alas.aws.amazon.com//AL2/ALAS2-2026-4022.html
https://alas.aws.amazon.com/faqs.html
https://explore.alas.aws.amazon.com/CVE-2026-103658.html
https://explore.alas.aws.amazon.com/CVE-2026-75818.html
Plugin Details
Severity: Low
ID: 371763
File Name: al2_ALAS-2026-4022.nasl
Version: 1.1
Type: Local
Agent: unix
Published: 10/24/2026
Updated: 10/24/2026
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.9
Percentile: 58.44
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.4
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2026-103658
CVSS v3
Risk Factor: Medium
Base Score: 5.9
Temporal Score: 5.2
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS v4
Risk Factor: Low
Base Score: 1.8
Threat Score: 0.2
Threat Vector: CVSS:4.0/E:U
Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:L/SA:N
CVSS Score Source: CVE-2026-75820
Vulnerability Information
CPE: cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:aspell-debuginfo, p-cpe:/a:amazon:linux:aspell-devel, p-cpe:/a:amazon:linux:aspell
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 10/24/2026
Vulnerability Publication Date: 10/6/2026
Reference Information
CVE: CVE-2026-103658, CVE-2026-75818, CVE-2026-75819, CVE-2026-75820