OpenSUSE Linux update for singularity

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU31792

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11328

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions and allows authenticated users to edit files within the `/run/singularity/instances/sing//` directory. The manipulation of those files can change the behavior of the starter-suid program when instances are joined resulting in potential privilege escalation on the host.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html

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) Incorrect default permissions

EUVDB-ID: #VU31793

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-19724

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insecure permissions for files and folders that are set by the application on $HOME/.singularity file when it is newly created by Singularity. A local user with access to the system can view contents of files and directories or modify them.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html

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.

3) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU31716

Risk: Medium

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

CVE-ID: CVE-2020-13845

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the image integrity is not validated when an ECL policy is enforced. A remote attacker can bypass implemented security restrictions.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html

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) Input validation error

EUVDB-ID: #VU31717

Risk: Medium

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

CVE-ID: CVE-2020-13846

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due the affected software fails to report an error in a Status Code. A remote attacker can run arbitrary SIF containers that have unsigned, or modified, objects.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html

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 validation of integrity check value

EUVDB-ID: #VU31718

Risk: Medium

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

CVE-ID: CVE-2020-13847

CWE-ID: CWE-354 - Improper Validation of Integrity Check Value

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to Singularity's sign and verify commands do not sign metadata found in the global header or data object descriptors of a SIF file. A remote attacker can cause unexpected behavior.

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00059.html

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.