Multiple vulnerabilities in Videolabs libmicrodns library



Published: 2020-03-24
Risk High
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2020-6071
CVE-2020-6080
CVE-2020-6079
CVE-2020-6073
CVE-2020-6078
CVE-2020-6077
CVE-2020-6072
CWE-ID CWE-674
CWE-400
CWE-190
CWE-252
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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libmicrodns
Web applications / JS libraries

Vendor Videolabs

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Uncontrolled Recursion

EUVDB-ID: #VU26342

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6071

CWE-ID: CWE-674 - Uncontrolled Recursion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to the compression pointer is followed without checking for recursion in the resource record-parsing functionality when parsing compressed labels in mDNS messages. A remote attacker can send a specially crafted mDNS message and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-0994


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) Resource exhaustion

EUVDB-ID: #VU26341

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6080

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to encountering errors while parsing mDNS messages in the "rr_read_TXT" function in the resource allocation handling. A remote attacker can send mDNS messages, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1002


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) Resource exhaustion

EUVDB-ID: #VU26340

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6079

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to encountering errors while parsing mDNS messages in the "rr_decode" function in the resource allocation handling. A remote attacker can send mDNS messages, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1002


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.

4) Integer overflow

EUVDB-ID: #VU26339

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6073

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow in the TXT record-parsing functionality when parsing the RDATA section in a TXT record in mDNS messages. A remote attacker can send a specially crafted mDNS message, trigger integer overflow and cause a denial of service condition on the target system.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-0996


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.

5) Unchecked Return Value

EUVDB-ID: #VU26338

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6078

CWE-ID: CWE-252 - Unchecked Return Value

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists within the message-parsing functionality due to the "mdns_read_header" function is not checked when parsing mDNS messages in "mdns_recv". A remote attacker can send a specially crafted mDNS message and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1001


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.

6) Out-of-bounds read

EUVDB-ID: #VU26337

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6077

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS).

The vulnerability exists within the message-parsing functionality due to a boundary condition when parsing mDNS messages. A remote attacker can send a specially crafted mDNS message, trigger out-of-bounds read error and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1000


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.

7) Unchecked Return Value

EUVDB-ID: #VU26336

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6072

CWE-ID: CWE-252 - Unchecked Return Value

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists within the label-parsing functionality due to the "rr_decode" function's return value is not checked when parsing compressed labels in mDNS messages. A remote attacker can send a specially crafted mDNS message and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libmicrodns: 0.1.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2020-0995


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.



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