CVE-2021-33833

ConnMan (aka Connection Manager) 1.30 through 1.39 has a stack-based b ...

Published 9 Jun 2021Modified 17 Jun 2026CWE 787

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:3.1/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

ConnMan (aka Connection Manager) 1.30 through 1.39 has a stack-based buffer overflow in uncompress in dnsproxy.c via NAME, RDATA, or RDLENGTH (for A or AAAA).

Affected packages and fixed versions

Source	Package	Fixed in
debian 10	connman	1.36-2.1~deb10u2
debian 11	connman	1.36-2.2
debian 12	connman	1.36-2.2
debian 13	connman	1.36-2.2
debian 14	connman	1.36-2.2
debian 9	connman	1.33-3+deb9u3
echo	connman	1.36-2.2
ubuntu 18.04-ESM	connman	1.35-6ubuntu0.1~esm1
ubuntu 20.04	connman	1.36-2ubuntu0.1
ubuntu 20.04-ESM	connman	1.36-2ubuntu0.1

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.