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Vulnerabilities / CVE-2019-20433

critical

CVE-2019-20433

aspell: UCS-2 and UCS-4 null-terminated string handling OOB read

Published Modified CWE 125
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Red Hat5.8CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (medium), Ubuntu (low).

Description

libaspell.a in GNU Aspell before 0.60.8 has a buffer over-read for a string ending with a single '\0' byte, if the encoding is set to ucs-2 or ucs-4 outside of the application, as demonstrated by the ASPELL_CONF environment variable.

Affected packages and fixed versions

SourcePackageFixed in
debian 10aspellno fix listed
debian 11aspell0.60.7-3
debian 12aspell0.60.7-3
debian 13aspell0.60.7-3
debian 14aspell0.60.7-3
debian 8aspellno fix listed
debian 9aspellno fix listed
echoaspell0.60.7-3
Red Hataspell, aspell-develno fix listed
ubuntu 18.04-ESMaspellno fix listed
Show all 11 entries from 10 sources
SourcePackageFixed in
debian 10aspellno fix listed
debian 11aspell0.60.7-3
debian 12aspell0.60.7-3
debian 13aspell0.60.7-3
debian 14aspell0.60.7-3
debian 8aspellno fix listed
debian 9aspellno fix listed
echoaspell0.60.7-3
Red Hataspellno fix listed
Red Hataspell-develno fix listed
ubuntu 18.04-ESMaspellno fix listed

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.