SUSE update for opensc

Published: 2021-04-13

Risk	Medium
Patch available	YES
Number of vulnerabilities	8
CVE-ID	CVE-2019-15945 CVE-2019-15946 CVE-2019-19479 CVE-2019-19480 CVE-2019-20792 CVE-2020-26570 CVE-2020-26571 CVE-2020-26572
CWE-ID	CWE-125 CWE-416 CWE-415 CWE-122 CWE-121
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE Linux Enterprise Module for Basesystem 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 8 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU23845

Risk: Low

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

CVE-ID: CVE-2019-15945

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing ASN.1 Bitstring within the decode_bit_string() function in libopensc/asn1.c. A local user can pass specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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) Out-of-bounds read

EUVDB-ID: #VU23844

Risk: Low

CVSSv3.1: 4.5 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15946

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing ASN.1 Octet string within the asn1_decode_entry() function in libopensc/asn1.c. A local user can supply specially crafted data to the application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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) Out-of-bounds read

EUVDB-ID: #VU23848

Risk: Low

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

CVE-ID: CVE-2019-19479

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when parsing SETCOS file attribute in libopensc/card-setcos.c. A local user can pass specially crafted file to the application, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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) Use-after-free

EUVDB-ID: #VU23846

Risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19480

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the sc_pkcs15_decode_prkdf_entry() function in libopensc/pkcs15-prkey.c. A local user can pass specially crafted data to the application, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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.

5) Double Free

EUVDB-ID: #VU34415

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20792

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local non-authenticated attacker to execute arbitrary code.

OpenSC before 0.20.0 has a double free in coolkey_free_private_data because coolkey_add_object in libopensc/card-coolkey.c lacks a uniqueness check.

Mitigation

Update the affected package opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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.

6) Heap-based buffer overflow

EUVDB-ID: #VU48687

Risk: Medium

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-2020-26570

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

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 error within the sc_oberthur_read_file. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger heap-based buffer overflow 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 opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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.

7) Stack-based buffer overflow

EUVDB-ID: #VU48688

Risk: Medium

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-2020-26571

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

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 error in sc_pkcs15emu_gemsafeGPK_init. A remote unauthenticated attacker can trigger stack-based buffer overflow 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 opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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.

8) Stack-based buffer overflow

EUVDB-ID: #VU48689

Risk: Medium

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-2020-26572

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

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 error in tcos_decipher. A remote unauthenticated attacker can trigger stack-based buffer overflow 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 opensc to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

opensc-debugsource: before 0.19.0-3.7.1

opensc-debuginfo: before 0.19.0-3.7.1

opensc: before 0.19.0-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211168-1/

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.