Multiple vulnerabilities in Cisco Jabber

1) OS Command Injection

EUVDB-ID: #VU46253

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-3430

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation in the application protocol handling features. A remote unauthenticated attacker can trick a victim to click a specially crafted link and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Jabber: 12.1 - 12.9

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_jabber:12.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.6:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-vY8M4KGB

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) Information disclosure

EUVDB-ID: #VU46254

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-3498

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to improper validation of message contents. A remote authenticated attacker can send specially crafted messages and gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Jabber: 12.1 - 12.9

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_jabber:12.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.6:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-ttcgB9R3

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

3) Input validation error

EUVDB-ID: #VU46255

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-3495

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to improper validation of message contents. A remote authenticated attacker can send specially crafted Extensible Messaging and Presence Protocol (XMPP) messages and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Jabber: 12.1 - 12.9

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_jabber:12.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.6:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-UyTKCPGg

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

4) Information disclosure

EUVDB-ID: #VU46256

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-3537

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to improper validation of message contents. A remote authenticated attacker can send specially crafted messages that contain Universal Naming Convention (UNC) links to a targeted user, convince the user to follow the provided link and gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Jabber: 12.1 - 12.9

CPE2.3

• cpe:2.3:a:cisco_systems:cisco_jabber:12.1:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.5:*:*:*:*:*:*:*
• cpe:2.3:a:cisco_systems:cisco_jabber:12.6:*:*:*:*:*:*:*

External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-jabber-G3NSjPn7

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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