SCA: security update for rack (GHSA-wpv5-97wm-hp9c)

high Tenable Self-Hosted Container Security Plugin ID 435525

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

- Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2,
`Rack::Multipart::Parser` can accumulate unbounded data when a multipart part’s header block never
terminates with the required blank line (`CRLFCRLF`). The parser keeps appending incoming bytes to memory
without a size cap, allowing a remote attacker to exhaust memory and cause a denial of service (DoS).
Attackers can send incomplete multipart headers to trigger high memory use, leading to process termination
(OOM) or severe slowdown. The effect scales with request size limits and concurrency. All applications
handling multipart uploads may be affected. Versions 2.2.19, 3.1.17, and 3.2.2 cap per-part header size
(e.g., 64 KiB). As a workaround, restrict maximum request sizes at the proxy or web server layer (e.g.,
Nginx `client_max_body_size`). (CVE-2025-61772)

Plugin Details

Severity: High

ID: 435525

Version: Revision 1.8

Type: Local

Family: SCA Checks

Published: 10/7/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.88

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2025-61772

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2025

Vulnerability Publication Date: 10/7/2025

Reference Information

CVE: CVE-2025-61772

IAVB: 2025-B-0167-S

cwe: CWE-400

Detections

Analytics