CVE catalog
CVE-2021-33833
connman: CVE-2021-33833
- Severity
- High · CVSS 8.8
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.57% · Oct 25, 2026
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).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | connman | sid | 2.0-2 | fixed |
| Debian | connman | forky | 2.0-2 | fixed |
| Debian | connman | trixie | 1.44-3 | fixed |
| Debian | connman | bookworm | 1.41-3 | fixed |
| Ubuntu | connman | pro | 1.35-1 | vulnerable |
| Ubuntu | connman | pro | 1.35-2 | vulnerable |
| Ubuntu | connman | pro | 1.35-6 | vulnerable |
| Ubuntu | connman | pro | 1.35-6ubuntu0.1~esm1 | fixed |
| Ubuntu | connman | 20.04 | 1.36-2build1 | vulnerable |
| Ubuntu | connman | 20.04 | 1.36-2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | connman | source | sid | 1.36-2.2 | not yet assigned | Not reported | [989662] |
| Debian | connman | source | forky | 1.36-2.2 | not yet assigned | Not reported | [989662] |
| Debian | connman | source | trixie | 1.36-2.2 | not yet assigned | Not reported | [989662] |
| Debian | connman | source | bookworm | 1.36-2.2 | not yet assigned | Not reported | [989662] |
| Ubuntu | connman | deb | pro | 1.35-6ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2021-33833 | Not reported |
| Ubuntu | connman | deb | 20.04 | 1.36-2ubuntu0.1 | Not reported | UBUNTU-CVE-2021-33833 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [connman]Fixed
Details (2)
1.41-3· amd64 · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
1.41-3· arm64 · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
- [connman-dev]Fixed
Source package: [connman]
Details (2)
1.41-3· amd64 · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
1.41-3· arm64 · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
- [connman-doc]Fixed
Source package: [connman]
Details (2)
1.41-3· all · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
1.41-3· all · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
- [connman-vpn]Fixed
Source package: [connman]
Details (2)
1.41-3· amd64 · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
1.41-3· arm64 · bookwormFixed · Fixed:
1.36-2.2dsa · connman · debian · bookworm; dsa · connman · debian · 12
[Debian 13 (Trixie)]
- [connman]Fixed
Details (2)
1.44-3· amd64 · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
1.44-3· arm64 · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
- [connman-dev]Fixed
Source package: [connman]
Details (2)
1.44-3· amd64 · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
1.44-3· arm64 · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
- [connman-doc]Fixed
Source package: [connman]
Details (2)
1.44-3· all · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
1.44-3· all · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
- [connman-tests]Fixed
Source package: [connman]
Details (2)
1.44-3· all · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
1.44-3· all · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
- [connman-vpn]Fixed
Source package: [connman]
Details (2)
1.44-3· amd64 · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
1.44-3· arm64 · trixieFixed · Fixed:
1.36-2.2dsa · connman · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_10692-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-33833]
- [https://osv.dev/vulnerability/DLA-2915-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2021-33833]
- [https://security-tracker.debian.org/tracker/CVE-2021-33833]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-33833.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]