#VU31716 Improper Verification of Cryptographic Signature in Singularity - CVE-2020-13845

Vulnerability identifier: #VU31716

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-2020-13845

CWE-ID: CWE-347

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Singularity: 3.0.0 - 3.5.3

---

External links
https://lists.opensuse.org/opensuse-security-announce/2020-07/msg00046.html
https://github.com/hpcng/singularity/security/advisories/GHSA-pmfr-63c2-jr5c
https://medium.com/sylabs

---

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.