#VU31718 Improper validation of integrity check value in Singularity - CVE-2020-13847

Vulnerability identifier: #VU31718

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-13847

CWE-ID: CWE-354

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Singularity
Universal components / Libraries / Libraries used by multiple products

Vendor: Singularity

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
Install updates from vendor's website.

Vulnerable software versions

Singularity: 3.0.0 - 3.5.3

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External links
https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00046.html
https://github.com/hpcng/singularity/security/advisories/GHSA-m7j2-9565-4h9v
https://medium.com/sylabs

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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.