Arch Linux Security Advisory ASA-202102-24
=========================================
Severity: Critical
Date    : 2021-02-12
CVE-ID  : CVE-2021-26675 CVE-2021-26676
Package : connman
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1543

Summary
======
The package connman before version 1.39-1 is vulnerable to multiple
issues including arbitrary code execution and information disclosure.

Resolution
=========
Upgrade to 1.39-1.

# pacman -Syu "connman>=1.39-1"

The problems have been fixed upstream in version 1.39.

Workaround
=========
None.

Description
==========
- CVE-2021-26675 (arbitrary code execution)

A security issue was found in connman 1.38. A stack buffer overflow can
be used to execute code by network adjacent attackers.

- CVE-2021-26676 (information disclosure)

A security issue was found in connman 1.38. A stack information leak
from an uninitialised variable can lead to information disclosure to a
remote attacker. This information can be used to help exploiting
CVE-2021-26675 reliably.

Impact
=====
A network adjacent attacker can execute arbitrary code on the affected
host.

References
=========
https://bugs.archlinux.org/task/69583
https://www.openwall.com/lists/oss-security/2021/02/08/2
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=e4079a20f617a4b076af503f6e4e8b0304c9f2cb
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=58d397ba74873384aee449690a9070bacd5676fa
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=a74524b3e3fad81b0fd1084ffdf9f2ea469cd9b1
https://security.archlinux.org/CVE-2021-26675
https://security.archlinux.org/CVE-2021-26676