SUSE update for opensc

Published: 2021-10-29

Risk	Low
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2021-42779 CVE-2021-42780 CVE-2021-42781 CVE-2021-42782
CWE-ID	CWE-416 CWE-252 CWE-122 CWE-121
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	SUSE OpenStack Cloud Crowbar 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 opensc-debugsource Operating systems & Components / Operating system package or component opensc-debuginfo Operating systems & Components / Operating system package or component opensc Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU66142

Risk: Low

CVSSv3.1: 1.8 [CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42779

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows an attacker with physical access to perform a denial of service attack.

The vulnerability exists due to a use-after-free error in Opensc in sc_file_valid. An attacker with physical access can trigger use-after-free to perform a denial of service attack.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

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

opensc-debugsource: before 0.13.0-3.19.1

opensc-debuginfo: before 0.13.0-3.19.1

opensc: before 0.13.0-3.19.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213582-1/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Unchecked Return Value

EUVDB-ID: #VU66136

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42780

CWE-ID: CWE-252 - Unchecked Return Value

Exploit availability: No

Description

The vulnerability allows an attacker with physical access to perform denial of service attacks.

The vulnerability exists due to use after return issue in insert_pin() function in Opensc. An attacker with physical access can trigger the vulnerability to perform denial of service attacks.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

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

opensc-debugsource: before 0.13.0-3.19.1

opensc-debuginfo: before 0.13.0-3.19.1

opensc: before 0.13.0-3.19.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213582-1/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

3) Heap-based buffer overflow

EUVDB-ID: #VU66141

Risk: Low

CVSSv3.1: 1.8 [CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42781

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows an attacker with physical access to perform denial of service attack.

The vulnerability exists due to a boundary error in Opensc before in pkcs15-oberthur.c. An attacker with physical access can pass specially crafted data to the application, trigger a heap-based buffer overflow and perform denial of service attack.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

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

opensc-debugsource: before 0.13.0-3.19.1

opensc-debuginfo: before 0.13.0-3.19.1

opensc: before 0.13.0-3.19.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213582-1/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

4) Stack-based buffer overflow

EUVDB-ID: #VU66137

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-42782

CWE-ID: CWE-121 - Stack-based buffer overflow

Exploit availability: No

Description

The vulnerability allows an attacker with physical access to perform a denial of service attack.

The vulnerability exists due to a boundary error in Opensc in various places. An attacker with physical access can trigger stack-based buffer overflow and perform a denial of service attack.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 8 - 9

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

opensc-debugsource: before 0.13.0-3.19.1

opensc-debuginfo: before 0.13.0-3.19.1

opensc: before 0.13.0-3.19.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213582-1/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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