Debian update for coturn
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-4067 CVE-2020-6061 CVE-2020-6062 |
| CWE-ID | CWE-665 CWE-122 CWE-476 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Debian Linux Operating systems & Components / Operating system coturn (Debian package) Operating systems & Components / Operating system package or component |
| Vendor | Debian |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Improper Initialization
EUVDB-ID: #VU30159
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-4067
CWE-ID:
CWE-665 - Improper Initialization
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
In coturn before version 4.5.1.3, there is an issue whereby STUN/TURN response buffer is not initialized properly. There is a leak of information between different client connections. One client (an attacker) could use their connection to intelligently query coturn to get interesting bytes in the padding bytes from the connection of another client. This has been fixed in 4.5.1.3.
MitigationUpdate coturn package to one of the following versions: 4.5.0.5-1+deb9u2, 4.5.1.1-1.1+deb10u1.
Vulnerable software versionsDebian Linux: All versions
coturn (Debian package): before 4.5.1.1-1.1+deb10u1
External linkshttp://www.debian.org/security/2020/dsa-4711
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Heap-based buffer overflow
EUVDB-ID: #VU25492
Risk: Medium
CVSSv3.1: 6.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-6061
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause information leaks and other misbehavior.
The vulnerability exists due to a boundary error when web server parses POST requests. A remote attacker can send a specially crafted HTTPS request, trigger heap-based buffer overflow and cause information leaks and other misbehavior.
Update coturn package to one of the following versions: 4.5.0.5-1+deb9u2, 4.5.1.1-1.1+deb10u1.
Vulnerable software versionsDebian Linux: All versions
coturn (Debian package): before 4.5.1.1-1.1+deb10u1
External linkshttp://www.debian.org/security/2020/dsa-4711
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) NULL pointer dereference
EUVDB-ID: #VU25493
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-6062
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when web server parses POST requests. A remote attacker can send a specially crafted HTTP request and perform a denial of service (DoS) attack.
MitigationUpdate coturn package to one of the following versions: 4.5.0.5-1+deb9u2, 4.5.1.1-1.1+deb10u1.
Vulnerable software versionsDebian Linux: All versions
coturn (Debian package): before 4.5.1.1-1.1+deb10u1
External linkshttp://www.debian.org/security/2020/dsa-4711
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
