SUSE update for openconnect

Published: 2024-02-02

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2018-20319 CVE-2020-12105 CVE-2020-12823 CVE-2019-16239
CWE-ID	CWE-312 CWE-300 CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Micro Operating systems & Components / Operating system SUSE Linux Enterprise Workstation Extension 15 Operating systems & Components / Operating system SUSE Package Hub 15 Operating systems & Components / Operating system Basesystem Module Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Applications 15 Operating systems & Components / Operating system SUSE Linux Enterprise Server 15 Operating systems & Components / Operating system SUSE Linux Enterprise Real Time 15 Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing 15 Operating systems & Components / Operating system SUSE Linux Enterprise Desktop 15 Operating systems & Components / Operating system openSUSE Leap Operating systems & Components / Operating system oath-toolkit-xml Operating systems & Components / Operating system package or component libpskc0-debuginfo Operating systems & Components / Operating system package or component oath-toolkit Operating systems & Components / Operating system package or component libpskc0 Operating systems & Components / Operating system package or component liboath-devel Operating systems & Components / Operating system package or component liboath0-debuginfo Operating systems & Components / Operating system package or component libpskc-devel Operating systems & Components / Operating system package or component liboath0 Operating systems & Components / Operating system package or component oath-toolkit-debuginfo Operating systems & Components / Operating system package or component pam_oath-debuginfo Operating systems & Components / Operating system package or component pam_oath Operating systems & Components / Operating system package or component oath-toolkit-debugsource Operating systems & Components / Operating system package or component openconnect-doc Operating systems & Components / Operating system package or component openconnect-lang Operating systems & Components / Operating system package or component openconnect-bash-completion Operating systems & Components / Operating system package or component libopenconnect5-debuginfo Operating systems & Components / Operating system package or component openconnect-devel Operating systems & Components / Operating system package or component libopenconnect5 Operating systems & Components / Operating system package or component stoken Operating systems & Components / Operating system package or component libstoken1-debuginfo Operating systems & Components / Operating system package or component stoken-gui-debuginfo Operating systems & Components / Operating system package or component stoken-devel Operating systems & Components / Operating system package or component stoken-gui Operating systems & Components / Operating system package or component libstoken1 Operating systems & Components / Operating system package or component openconnect-debugsource Operating systems & Components / Operating system package or component stoken-debugsource Operating systems & Components / Operating system package or component openconnect Operating systems & Components / Operating system package or component stoken-debuginfo Operating systems & Components / Operating system package or component openconnect-debuginfo Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Cleartext storage of sensitive information

EUVDB-ID: #VU28218

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-20319

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to OpenConnect VPN client stores credentials in an insecure manner in memory. A local user can read credentials from memory in plain text.

Mitigation

Update the affected package openconnect to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro: 5.5

SUSE Linux Enterprise Workstation Extension 15: SP5

SUSE Package Hub 15: 15-SP5

Basesystem Module: 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP5

SUSE Linux Enterprise Server 15: SP5

SUSE Linux Enterprise Real Time 15: SP5

SUSE Linux Enterprise High Performance Computing 15: SP5

SUSE Linux Enterprise Desktop 15: SP5

openSUSE Leap: 15.4 - 15.5

oath-toolkit-xml: before 2.6.2-150000.3.5.1

libpskc0-debuginfo: before 2.6.2-150000.3.5.1

oath-toolkit: before 2.6.2-150000.3.5.1

libpskc0: before 2.6.2-150000.3.5.1

liboath-devel: before 2.6.2-150000.3.5.1

liboath0-debuginfo: before 2.6.2-150000.3.5.1

libpskc-devel: before 2.6.2-150000.3.5.1

liboath0: before 2.6.2-150000.3.5.1

oath-toolkit-debuginfo: before 2.6.2-150000.3.5.1

pam_oath-debuginfo: before 2.6.2-150000.3.5.1

pam_oath: before 2.6.2-150000.3.5.1

oath-toolkit-debugsource: before 2.6.2-150000.3.5.1

openconnect-doc: before 9.12-150400.15.3.1

openconnect-lang: before 9.12-150400.15.3.1

openconnect-bash-completion: before 9.12-150400.15.3.1

libopenconnect5-debuginfo: before 9.12-150400.15.3.1

openconnect-devel: before 9.12-150400.15.3.1

libopenconnect5: before 9.12-150400.15.3.1

stoken: before 0.81-150400.13.2.1

libstoken1-debuginfo: before 0.81-150400.13.2.1

stoken-gui-debuginfo: before 0.81-150400.13.2.1

stoken-devel: before 0.81-150400.13.2.1

stoken-gui: before 0.81-150400.13.2.1

libstoken1: before 0.81-150400.13.2.1

openconnect-debugsource: before 9.12-150400.15.3.1

stoken-debugsource: before 0.81-150400.13.2.1

openconnect: before 9.12-150400.15.3.1

stoken-debuginfo: before 0.81-150400.13.2.1

openconnect-debuginfo: before 9.12-150400.15.3.1

External links

http://www.suse.com/support/update/announcement/2024/suse-su-20240317-1/

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.

Is there known malware, which exploits this vulnerability?

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

2) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU28215

Risk: Medium

CVSSv3.1: 5.6 [CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12105

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a Man-in-the-Middle attack.

The vulnerability exists due to OpenConnect mishandles negative return values from X509_check_ function calls. A remote attacker can perform a Man-in-the-Middle (MitM) attack and gain access to data, transferred via VPN connection.

Mitigation

Update the affected package openconnect to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro: 5.5

SUSE Linux Enterprise Workstation Extension 15: SP5

SUSE Package Hub 15: 15-SP5

Basesystem Module: 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP5

SUSE Linux Enterprise Server 15: SP5

SUSE Linux Enterprise Real Time 15: SP5

SUSE Linux Enterprise High Performance Computing 15: SP5

SUSE Linux Enterprise Desktop 15: SP5

openSUSE Leap: 15.4 - 15.5

oath-toolkit-xml: before 2.6.2-150000.3.5.1

libpskc0-debuginfo: before 2.6.2-150000.3.5.1

oath-toolkit: before 2.6.2-150000.3.5.1

libpskc0: before 2.6.2-150000.3.5.1

liboath-devel: before 2.6.2-150000.3.5.1

liboath0-debuginfo: before 2.6.2-150000.3.5.1

libpskc-devel: before 2.6.2-150000.3.5.1

liboath0: before 2.6.2-150000.3.5.1

oath-toolkit-debuginfo: before 2.6.2-150000.3.5.1

pam_oath-debuginfo: before 2.6.2-150000.3.5.1

pam_oath: before 2.6.2-150000.3.5.1

oath-toolkit-debugsource: before 2.6.2-150000.3.5.1

openconnect-doc: before 9.12-150400.15.3.1

openconnect-lang: before 9.12-150400.15.3.1

openconnect-bash-completion: before 9.12-150400.15.3.1

libopenconnect5-debuginfo: before 9.12-150400.15.3.1

openconnect-devel: before 9.12-150400.15.3.1

libopenconnect5: before 9.12-150400.15.3.1

stoken: before 0.81-150400.13.2.1

libstoken1-debuginfo: before 0.81-150400.13.2.1

stoken-gui-debuginfo: before 0.81-150400.13.2.1

stoken-devel: before 0.81-150400.13.2.1

stoken-gui: before 0.81-150400.13.2.1

libstoken1: before 0.81-150400.13.2.1

openconnect-debugsource: before 9.12-150400.15.3.1

stoken-debugsource: before 0.81-150400.13.2.1

openconnect: before 9.12-150400.15.3.1

stoken-debuginfo: before 0.81-150400.13.2.1

openconnect-debuginfo: before 9.12-150400.15.3.1

External links

http://www.suse.com/support/update/announcement/2024/suse-su-20240317-1/

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.

3) Buffer overflow

EUVDB-ID: #VU28192

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12823

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary within the get_cert_name() function in gnutls.c. A remote attacker can trick the victim to connect to a malicious VPN server, trigger buffer overflow and crash the client or execute arbitrary code on the system.

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

Mitigation

Update the affected package openconnect to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro: 5.5

SUSE Linux Enterprise Workstation Extension 15: SP5

SUSE Package Hub 15: 15-SP5

Basesystem Module: 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP5

SUSE Linux Enterprise Server 15: SP5

SUSE Linux Enterprise Real Time 15: SP5

SUSE Linux Enterprise High Performance Computing 15: SP5

SUSE Linux Enterprise Desktop 15: SP5

openSUSE Leap: 15.4 - 15.5

oath-toolkit-xml: before 2.6.2-150000.3.5.1

libpskc0-debuginfo: before 2.6.2-150000.3.5.1

oath-toolkit: before 2.6.2-150000.3.5.1

libpskc0: before 2.6.2-150000.3.5.1

liboath-devel: before 2.6.2-150000.3.5.1

liboath0-debuginfo: before 2.6.2-150000.3.5.1

libpskc-devel: before 2.6.2-150000.3.5.1

liboath0: before 2.6.2-150000.3.5.1

oath-toolkit-debuginfo: before 2.6.2-150000.3.5.1

pam_oath-debuginfo: before 2.6.2-150000.3.5.1

pam_oath: before 2.6.2-150000.3.5.1

oath-toolkit-debugsource: before 2.6.2-150000.3.5.1

openconnect-doc: before 9.12-150400.15.3.1

openconnect-lang: before 9.12-150400.15.3.1

openconnect-bash-completion: before 9.12-150400.15.3.1

libopenconnect5-debuginfo: before 9.12-150400.15.3.1

openconnect-devel: before 9.12-150400.15.3.1

libopenconnect5: before 9.12-150400.15.3.1

stoken: before 0.81-150400.13.2.1

libstoken1-debuginfo: before 0.81-150400.13.2.1

stoken-gui-debuginfo: before 0.81-150400.13.2.1

stoken-devel: before 0.81-150400.13.2.1

stoken-gui: before 0.81-150400.13.2.1

libstoken1: before 0.81-150400.13.2.1

openconnect-debugsource: before 9.12-150400.15.3.1

stoken-debugsource: before 0.81-150400.13.2.1

openconnect: before 9.12-150400.15.3.1

stoken-debuginfo: before 0.81-150400.13.2.1

openconnect-debuginfo: before 9.12-150400.15.3.1

External links

http://www.suse.com/support/update/announcement/2024/suse-su-20240317-1/

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) Buffer overflow

EUVDB-ID: #VU22305

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-16239

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary in the process_http_response when processing HTTP responses. A remote attacker that controls a malicious HTTP server can trick the victim to visit a malicious website, send an HTTP response with crafted chunk sizes for HTTP chunked encoding, trigger memory corruption and execute arbitrary code on the target system.

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

Mitigation

Update the affected package openconnect to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Micro: 5.5

SUSE Linux Enterprise Workstation Extension 15: SP5

SUSE Package Hub 15: 15-SP5

Basesystem Module: 15-SP5

SUSE Linux Enterprise Server for SAP Applications 15: SP5

SUSE Linux Enterprise Server 15: SP5

SUSE Linux Enterprise Real Time 15: SP5

SUSE Linux Enterprise High Performance Computing 15: SP5

SUSE Linux Enterprise Desktop 15: SP5

openSUSE Leap: 15.4 - 15.5

oath-toolkit-xml: before 2.6.2-150000.3.5.1

libpskc0-debuginfo: before 2.6.2-150000.3.5.1

oath-toolkit: before 2.6.2-150000.3.5.1

libpskc0: before 2.6.2-150000.3.5.1

liboath-devel: before 2.6.2-150000.3.5.1

liboath0-debuginfo: before 2.6.2-150000.3.5.1

libpskc-devel: before 2.6.2-150000.3.5.1

liboath0: before 2.6.2-150000.3.5.1

oath-toolkit-debuginfo: before 2.6.2-150000.3.5.1

pam_oath-debuginfo: before 2.6.2-150000.3.5.1

pam_oath: before 2.6.2-150000.3.5.1

oath-toolkit-debugsource: before 2.6.2-150000.3.5.1

openconnect-doc: before 9.12-150400.15.3.1

openconnect-lang: before 9.12-150400.15.3.1

openconnect-bash-completion: before 9.12-150400.15.3.1

libopenconnect5-debuginfo: before 9.12-150400.15.3.1

openconnect-devel: before 9.12-150400.15.3.1

libopenconnect5: before 9.12-150400.15.3.1

stoken: before 0.81-150400.13.2.1

libstoken1-debuginfo: before 0.81-150400.13.2.1

stoken-gui-debuginfo: before 0.81-150400.13.2.1

stoken-devel: before 0.81-150400.13.2.1

stoken-gui: before 0.81-150400.13.2.1

libstoken1: before 0.81-150400.13.2.1

openconnect-debugsource: before 9.12-150400.15.3.1

stoken-debugsource: before 0.81-150400.13.2.1

openconnect: before 9.12-150400.15.3.1

stoken-debuginfo: before 0.81-150400.13.2.1

openconnect-debuginfo: before 9.12-150400.15.3.1

External links

http://www.suse.com/support/update/announcement/2024/suse-su-20240317-1/

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.