vulnerability
Arch Linux: Arbitrary code execution (CVE-2021-33833)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Jun 9, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Jun 9, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue has been found in the dnsproxy component of connman in releases 1.32 to 1.39. Unpacking of NAME and RDATA/RDLENGTH fields with TYPE A/AAAA in the uncompress function uses a memcpy with insufficient bounds checking, which can overflow a stack buffer.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-33833
- https://attackerkb.com/topics/CVE-2021-33833
- URL-http://www.openwall.com/lists/oss-security/2021/06/09/1
- URL-http://www.openwall.com/lists/oss-security/2022/01/25/1
- URL-https://lists.debian.org/debian-lts-announce/2022/02/msg00009.html
- URL-https://lore.kernel.org/connman/
- URL-https://security.archlinux.org/ASA-202106-44
- URL-https://security.gentoo.org/glsa/202107-29
- CWE-787
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