Risk | High |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2021-26676 CVE-2021-26675 |
CWE-ID | CWE-401 CWE-121 |
Exploitation vector | Local network |
Public exploit | N/A |
Vulnerable software Subscribe |
ConnMan Universal components / Libraries / Libraries used by multiple products |
Vendor | kernel.org |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU50669
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 - Missing release of memory after effective lifetime
Exploit availability: No
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsConnMan: 0.1 - 1.38
External linkshttp://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
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.
EUVDB-ID: #VU50670
Risk: High
CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-26675
CWE-ID:
CWE-121 - Stack-based buffer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within dnsproxy in ConnMan. A remote unauthenticated attacker on the local network can send specially crafted packets to the affected system, trigger a stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsConnMan: 0.1 - 1.38
External linkshttp://bugzilla.suse.com/show_bug.cgi?id=1181751
http://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=e4079a20f617a4b076af503f6e4e8b0304c9f2cb
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
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.