Vulnerability identifier: #VU50669

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-26676

CWE-ID: CWE-401

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
ConnMan
Universal components / Libraries / Libraries used by multiple products

Vendor: kernel.org

Description
The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due memory leak in gdhcp in ConnMan. A remote attacker on the local network can force the application to leak sensitive stack information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ConnMan: 0.1 - 1.38

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External links
http://bugzilla.suse.com/show_bug.cgi?id=1181751
http://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=58d397ba74873384aee449690a9070bacd5676fa
http://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=a74524b3e3fad81b0fd1084ffdf9f2ea469cd9b1
http://git.kernel.org/pub/scm/network/connman/connman.git/tree/ChangeLog
http://lists.debian.org/debian-lts-announce/2021/02/msg00013.html
http://www.debian.org/security/2021/dsa-4847
http://www.openwall.com/lists/oss-security/2021/02/08/2

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.