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Vulnerability · Published Apr 10, 2025 · Assigned by mitre

CVE-2025-32743

Critical 9.0

In plain English

A critical-severity security flaw in ConnMan from ConnMan. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.0Critical
Exploit odds (30 days)0.5%top 55.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

In ConnMan through 1.44, the lookup string in ns_resolv in dnsproxy.c can be NULL or an empty string when the TC (Truncated) bit is set in a DNS response. This allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code, because those lookup values lead to incorrect length calculations and incorrect memcpy operations.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12connmanno fix listedDEBIAN-CVE-2025-32743
Debian:13connman1.44-2DEBIAN-CVE-2025-32743
Debian:14connman1.44-2DEBIAN-CVE-2025-32743
Ubuntu:22.04:LTSconnmanno fix listedUBUNTU-CVE-2025-32743
Ubuntu:24.04:LTSconnmanno fix listedUBUNTU-CVE-2025-32743
Ubuntu:25.10connmanno fix listedUBUNTU-CVE-2025-32743
Ubuntu:26.04:LTSconnmanno fix listedUBUNTU-CVE-2025-32743
Ubuntu:26.10connmanno fix listedUBUNTU-CVE-2025-32743

Affected products (as reported)

VendorProductVersions
ConnMan ConnMan 0 – through 1.44

Weakness: CWE-392 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

References