Multiple vulnerabilities in JetBrains TeamCity



Risk High
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2021-43200
CVE-2021-43198
CVE-2021-43199
CVE-2021-43197
CVE-2021-43195
CVE-2021-43193
CVE-2021-43194
CWE-ID CWE-264
CWE-79
CWE-94
CWE-693
CWE-20
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
TeamCity
Web applications / CRM systems

Vendor JetBrains s.r.o.

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58008

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-43200

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to application does not properly impose security restrictions in the agent push functionality. A remote user can gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


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.

2) Stored cross-site scripting

EUVDB-ID: #VU58007

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-43198

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote privileged user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58006

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-43199

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions in the create patch functionality. A remote user can bypass implemented security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


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) Code Injection

EUVDB-ID: #VU58005

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-43197

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation in email notifications. A remote attacker can execute arbitrary HTML code in the email client when reading the message.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


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) Protection Mechanism Failure

EUVDB-ID: #VU58004

Risk: Low

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

CVE-ID: CVE-2021-43195

CWE-ID: CWE-693 - Protection Mechanism Failure

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to missing certain HTTP security headers. An attacker can bypass implemented security restrictions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


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) Input validation error

EUVDB-ID: #VU58002

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2021-43193

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input agent push functionality. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


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) Information disclosure

EUVDB-ID: #VU58001

Risk: Low

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

CVE-ID: CVE-2021-43194

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to excessive data output by the application. A remote attacker can enumerate application users.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamCity: 2017.1 - 2021.1.1

CPE2.3 External links

http://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021


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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