Multiple vulnerabilities in IBM PowerSC

1) Information disclosure

EUVDB-ID: #VU62644

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-2022-27776

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 curl can leak authentication or cookie header data during HTTP redirects to the same host but another port number. When asked to send custom headers or cookies in its HTTP requests, curl sends that set of headers only to the host which name is used in the initial URL, so that redirects to other hosts will make curl send the data to those. However, due to a flawed check, curl wrongly also sends that same set of headers to the hosts that are identical to the first one but use a different port number or URL scheme.

The vulnerability exists due to an incomplete fix for #VU10224 (CVE-2018-1000007).

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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 management error

EUVDB-ID: #VU62643

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-2022-27775

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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

The vulnerability exists due to improper management of internal resources when handling IPv6 protocol. Due to errors in the logic, the config matching function did not take the IPv6 address zone id into account which could lead to libcurl reusing the wrong connection when one transfer uses a zone id and a subsequent transfer uses another (or no) zone id.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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) Infinite loop

EUVDB-ID: #VU63008

Risk: Medium

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

CVE-ID: CVE-2022-27781

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop when handling requests with the CURLOPT_CERTINFO option. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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) Incorrect Implementation of Authentication Algorithm

EUVDB-ID: #VU63009

Risk: Medium

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:Green]

CVE-ID: CVE-2022-27782

CWE-ID: CWE-303 - Incorrect Implementation of Authentication Algorithm

Exploit availability: No

Description

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

The vulnerability exists due to the way libcurl handles previously used connections in a connection pool for subsequent transfers. Several TLS and SSH settings were left out from the configuration match checks, resulting in erroneous matches for different resources. As a result, libcurl can send authentication string from one resource to another, exposing credentials to a third-party.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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) Improper control of a resource through its lifetime

EUVDB-ID: #VU63004

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-27778

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to delete files on the system.

The vulnerability exists in the curl command line tool when --no-clobber is used together with --remove-on-error. A remote attacker can trick the victim to connect to a malicious server and force the command line tool to remove unexpected files.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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) Information disclosure

EUVDB-ID: #VU63005

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-27779

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 libcurl wrongly allows HTTP cookies to be set for Top Level Domains (TLDs) if the host name is provided with a trailing dot. As a result, an attacker can create cookie files that are later sent to a different and unrelated site or domain.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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) Cleartext transmission of sensitive information

EUVDB-ID: #VU63011

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/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-2022-30115

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Exploit availability: No

Description

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

The vulnerability exists due to an error in HSTS implementation that can allow curl to continue using HTTP protocol instead of HTTPS if the host name in the given URL used a trailing dot while not using one when it built the HSTS cache. A remote attacker with ability to intercept traffic can obtain potentially sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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

8) Input validation error

EUVDB-ID: #VU63007

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-27780

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass filters and checks.

The vulnerability exists due to the curl URL parser wrongly accepts percent-encoded URL separators like '/' when decoding the host name part of a URL, making it a different URL using the wrong host name when it is later retrieved. For example, the URL like http://example.com%2F10.0.0.1/, would be allowed by the parser and get transposed into http://example.com/10.0.0.1/.

A remote attacker can bypass various internal filters and checks and force the curl to connect to a wrong web application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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.

9) Information disclosure

EUVDB-ID: #VU62641

Risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-27774

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 curl attempts to follow redirects during authentication process and does not consider different port numbers or protocols to be separate authentication targets. If the web application performs redirection to a different port number of protocol, cURL will allow such redirection and will pass credentials. It could also leak the TLS SRP credentials this way.

By default, curl only allows redirects to HTTP(S) and FTP(S), but can be asked to allow redirects to all protocols curl supports.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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.

10) Improper Authentication

EUVDB-ID: #VU62640

Risk: Medium

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

CVE-ID: CVE-2022-22576

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error when re-using OAUTH2 connections for SASL-enabled protocols, such as SMPTP(S), IMAP(S), POP3(S) and LDAP(S) (openldap only). libcurl may reuse OAUTH2-authenticated connections without properly making sure that the connection was authenticated with the same credentials as set for this transfer. As a result, a connection that is successfully created and authenticated with a user name + OAUTH2 bearer can subsequently be erroneously reused even for user + [other OAUTH2 bearer], even though that might not even be a valid bearer.

A remote attacker can exploit this vulnerability against applications intended for use in multi-user environments to bypass authentication and gain unauthorized access to victim's accounts.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerSC: 1.3 - 2.1

CPE2.3

External links

https://www.ibm.com/blogs/psirt/security-bulletin-multiple-vulnerabilities-in-curl-affect-powersc-2/
https://www.ibm.com/support/pages/node/6823211

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.

Risk	Medium
Patch available	YES
Number of vulnerabilities	10
CVE-ID	CVE-2022-27776 CVE-2022-27775 CVE-2022-27781 CVE-2022-27782 CVE-2022-27778 CVE-2022-27779 CVE-2022-30115 CVE-2022-27780 CVE-2022-27774 CVE-2022-22576
CWE-ID	CWE-200 CWE-399 CWE-835 CWE-303 CWE-664 CWE-319 CWE-20 CWE-287
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	PowerSC Operating systems & Components / Operating system
Vendor	IBM Corporation