SUSE update for ruby2.1

Published: 2021-12-01

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2020-25613 CVE-2021-31799 CVE-2021-31810 CVE-2021-32066
CWE-ID	CWE-444 CWE-77 CWE-200 CWE-295
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE Linux Enterprise Software Development Kit Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system HPE Helion Openstack Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system ruby2.1-devel Operating systems & Components / Operating system package or component ruby2.1-stdlib-debuginfo Operating systems & Components / Operating system package or component ruby2.1-stdlib Operating systems & Components / Operating system package or component ruby2.1-debugsource Operating systems & Components / Operating system package or component ruby2.1-debuginfo Operating systems & Components / Operating system package or component ruby2.1 Operating systems & Components / Operating system package or component libruby2_1-2_1-debuginfo Operating systems & Components / Operating system package or component libruby2_1-2_1 Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU47333

Risk: Medium

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

CVE-ID: CVE-2020-25613

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Update the affected package ruby2.1 to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

SUSE Linux Enterprise Software Development Kit: 12-SP5

SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5

SUSE OpenStack Cloud: 8 - 9

ruby2.1-devel: before 2.1.9-19.6.1

ruby2.1-stdlib-debuginfo: before 2.1.9-19.6.1

ruby2.1-stdlib: before 2.1.9-19.6.1

ruby2.1-debugsource: before 2.1.9-19.6.1

ruby2.1-debuginfo: before 2.1.9-19.6.1

ruby2.1: before 2.1.9-19.6.1

libruby2_1-2_1-debuginfo: before 2.1.9-19.6.1

libruby2_1-2_1: before 2.1.9-19.6.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20213837-1/

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. However, proof of concept for this vulnerability is available.

2) Command Injection

EUVDB-ID: #VU52796

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-2021-31799

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system.

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

Mitigation

Update the affected package ruby2.1 to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

SUSE Linux Enterprise Software Development Kit: 12-SP5

SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5

SUSE OpenStack Cloud: 8 - 9

ruby2.1-devel: before 2.1.9-19.6.1

ruby2.1-stdlib-debuginfo: before 2.1.9-19.6.1

ruby2.1-stdlib: before 2.1.9-19.6.1

ruby2.1-debugsource: before 2.1.9-19.6.1

ruby2.1-debuginfo: before 2.1.9-19.6.1

ruby2.1: before 2.1.9-19.6.1

libruby2_1-2_1-debuginfo: before 2.1.9-19.6.1

libruby2_1-2_1: before 2.1.9-19.6.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20213837-1/

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) Information disclosure

EUVDB-ID: #VU55488

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/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-2021-31810

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 within Net::FTP in Ruby when processing PASV responses. A remote attacker can trick the victim to connect to a malicious FTP server and trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).

Mitigation

Update the affected package ruby2.1 to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

SUSE Linux Enterprise Software Development Kit: 12-SP5

SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5

SUSE OpenStack Cloud: 8 - 9

ruby2.1-devel: before 2.1.9-19.6.1

ruby2.1-stdlib-debuginfo: before 2.1.9-19.6.1

ruby2.1-stdlib: before 2.1.9-19.6.1

ruby2.1-debugsource: before 2.1.9-19.6.1

ruby2.1-debuginfo: before 2.1.9-19.6.1

ruby2.1: before 2.1.9-19.6.1

libruby2_1-2_1-debuginfo: before 2.1.9-19.6.1

libruby2_1-2_1: before 2.1.9-19.6.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20213837-1/

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) Improper Certificate Validation

EUVDB-ID: #VU55489

Risk: Medium

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

CVE-ID: CVE-2021-32066

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists in Net::IMAP in Ruby, due to the gem does not raise an exception when StartTLS fails with an an unknown response. A remote attacker can perform a man-in-the-middle (MitM) attack.

Mitigation

Update the affected package ruby2.1 to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

SUSE Linux Enterprise Software Development Kit: 12-SP5

SUSE Linux Enterprise Server for SAP: 12-SP3 - 12-SP4

HPE Helion Openstack: 8

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP5

SUSE OpenStack Cloud: 8 - 9

ruby2.1-devel: before 2.1.9-19.6.1

ruby2.1-stdlib-debuginfo: before 2.1.9-19.6.1

ruby2.1-stdlib: before 2.1.9-19.6.1

ruby2.1-debugsource: before 2.1.9-19.6.1

ruby2.1-debuginfo: before 2.1.9-19.6.1

ruby2.1: before 2.1.9-19.6.1

libruby2_1-2_1-debuginfo: before 2.1.9-19.6.1

libruby2_1-2_1: before 2.1.9-19.6.1

CPE2.3

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20213837-1/

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.