Out-of-bounds Write Affecting connman package, versions <1.35-6ubuntu0.1~esm1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
2.57% (84th percentile)

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  • Snyk IDSNYK-UBUNTU1804-CONNMAN-1303245
  • published22 Mar 2026
  • disclosed9 Jun 2021

Introduced: 9 Jun 2021

CVE-2021-33833  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Ubuntu:18.04 connman to version 1.35-6ubuntu0.1~esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream connman package and not the connman package as distributed by Ubuntu. See How to fix? for Ubuntu:18.04 relevant fixed versions and status.

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).

CVSS Base Scores

version 3.1