Multiple vulnerabilities in IBM API Connect

1) Privilege escalation

EUVDB-ID: #VU18110

Risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2019-0211

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

Exploit availability: Yes

Description

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

The vulnerability exists within MPM implementation due to the application does not properly maintain each child's listener bucket number in the scoreboard that may lead to unprivileged code or scripts run by server (e.g. via mod_php) to modify the scoreboard and abuse the privileged main process.

A local user can execute arbitrary code on the system with privileges of the Apache HTTP Server code process.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.

2) Use of Uninitialized Variable

EUVDB-ID: #VU26528

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-1934

CWE-ID: CWE-457 - Use of Uninitialized Variable

Exploit availability: No

Description

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

The vulnerability exists due to the "mod_proxy_ftp" may use uninitialized memory when proxying to a malicious FTP server. A remote attacker can gain unauthorized access to sensitive information on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

3) Open redirect

EUVDB-ID: #VU26527

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-1927

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in some "mod_rewrite" configurations. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

4) Input validation error

EUVDB-ID: #VU20374

Risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-10098

CWE-ID: CWE-20 - Improper input validation

Exploit availability: Yes

Description

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

The vulnerability exists due to incorrect handling of encoded line break characters within rewrite rules. A remote attacker can send a specially crafted HTTP request and potentially bypass security restrictions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

5) Cross-site scripting

EUVDB-ID: #VU20384

Risk: Low

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

CVE-ID: CVE-2019-10092

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 attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data on the mod_proxy error page. A remote attacker can trick the victim to follow a specially crafted link 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 update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

6) XML External Entity injection

EUVDB-ID: #VU18923

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2018-20843

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

Exploit availability: Yes

Description

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

The vulnerability exists due to insufficient validation of user-supplied XML input including XML names that contain a large number of colons. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

7) Input validation error

EUVDB-ID: #VU18113

Risk: Low

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

CVE-ID: CVE-2019-0220

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to the web server does not merge consecutive slashes in URLs, that can lead to incorrect processing of requests when accessing CGI programs. Such web server behavior may lead to security restrictions bypass.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

8) Out-of-bounds read

EUVDB-ID: #VU11281

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1301

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper validation of user-supplied input. A remote attacker can send a specially crafted HTTP request to trigger an out-of-bounds memory access error after a header size limit has been reached to cause the target service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

9) Security restrictions bypass

EUVDB-ID: #VU11284

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-15715

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists on systems that allow uploading of user-specified filenames due to the '<FilesMatch>' expression may not correctly match characters in a filename. A remote attacker can supply a specially crafted filename to potentially bypass security controls that use the '<FilesMatch>' directive.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

10) Out-of-bounds write

EUVDB-ID: #VU11283

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-15710

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in HTTPD mod_authnz_ldap due to improper validation of user-supplied input. A remote attacker can send a specially crafted Accept-Language header value, trigger an out-of-bounds memory write error and potentially cause the target service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

11) Out-of-bounds read

EUVDB-ID: #VU9477

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-12613

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to an out-of-bounds array dereference in the apr_time_exp_get() function. A remote attacker can access prior out-of-bounds memory, reveal the contents of a different static heap value and read arbitrary files or cause the application to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

12) Information disclosure

EUVDB-ID: #VU15618

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-12618

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The weakness exists due to an out-of-bounds array dereference in the apr_time_exp_get() function. A remote attacker can access prior out-of-bounds memory, reveal the contents of a different static heap value and read arbitrary files or cause the application to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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

13) Use-after-free

EUVDB-ID: #VU8504

Risk: Low

CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear]

CVE-ID: CVE-2017-9798

CWE-ID: CWE-416 - Use After Free

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to use-after-free error when processing HTTP OPTIONS requests in server/core.c, when limits are configured in .htaccess or httpd.conf configuration files. A remote unauthenticated attacker can read portions of memory through HTTP OPTIONS requests and gain access to potentially sensitive data.

The vulnerability is dubbed Optionsbleed.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.

14) Out-of-bounds read

EUVDB-ID: #VU7119

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2017-7679

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

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to out-of-bounds read within the mod_mime when constructing Content-Type response header. A remote attacker read one byte pas the end of a buffer when sending a malicious Content-Type response header.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM API Connect: 5.0.0 - 5.0.8.11

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-ibm-api-connect-is-impacted-by-multiple-vulnerabilities-in-ibm-http-server/
https://www.ibm.com/support/pages/node/6489787

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

Risk	Medium
Patch available	YES
Number of vulnerabilities	14
CVE-ID	CVE-2019-0211 CVE-2020-1934 CVE-2020-1927 CVE-2019-10098 CVE-2019-10092 CVE-2018-20843 CVE-2019-0220 CVE-2018-1301 CVE-2017-15715 CVE-2017-15710 CVE-2017-12613 CVE-2017-12618 CVE-2017-9798 CVE-2017-7679
CWE-ID	CWE-264 CWE-457 CWE-601 CWE-20 CWE-79 CWE-611 CWE-125 CWE-787 CWE-200 CWE-416
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Public exploit code for vulnerability #4 is available. Public exploit code for vulnerability #6 is available. Public exploit code for vulnerability #13 is available. Public exploit code for vulnerability #14 is available.
Vulnerable software	IBM API Connect Client/Desktop applications / Office applications
Vendor	IBM Corporation