SB2023100479 - Multiple vulnerabilities in PyTorch TorchServe

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Deserialization of Untrusted Data (CVE-ID: CVE-2022-1471)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data within the SnakeYaml's Constructor() class. A remote attacker can pass specially crafted yaml content to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2023-43654)

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker to compromise the affected system by invoking remote HTTP download request and writing files to the system.

Remediation

Install update from vendor's website.

References

• https://www.oligo.security/blog/shelltorch-torchserve-ssrf-vulnerability-cve-2023-43654
• https://github.com/pytorch/serve/releases/tag/v0.8.2
• https://github.com/pytorch/serve/pull/2534
• https://github.com/pytorch/serve/security/advisories/GHSA-8fxr-qfr9-p34w