CVE-2017-8911

An integer underflow has been identified in the unicode_to_utf8() func ...

Published 12 May 2017Modified 17 Jun 2026CWE 191

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

Severity by source

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

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

Description

An integer underflow has been identified in the unicode_to_utf8() function in tnef 1.4.14. This might lead to invalid write operations, controlled by an attacker.

Affected packages and fixed versions

Source	Package	Fixed in
debian 11	tnef	1.4.12-1.2
debian 12	tnef	1.4.12-1.2
debian 13	tnef	1.4.12-1.2
debian 14	tnef	1.4.12-1.2
debian 7	tnef	1.4.9-1+deb7u3
debian 8	tnef	1.4.9-1+deb8u3
echo	tnef	1.4.12-1.2
ubuntu 14.04	tnef	1.4.9-1+deb8u3build0.14.04.1
ubuntu 16.04	tnef	1.4.9-1+deb8u3build0.16.04.1
ubuntu 16.04-ESM	tnef	1.4.9-1+deb8u3build0.16.04.1
ubuntu 16.10	tnef	1.4.9-1+deb8u3build0.16.10.1
ubuntu 17.04	tnef	1.4.12-1ubuntu0.1

References

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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.