🛡️ CVE-2018-12026 — passenger

🔴 CVSS 9.5 — Critical ✅ No Known Exploit CWE-59 OSV
9.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Phusion Passenger SpawningKit Contains Arbitrary Read/Write Vulnerability

During the spawning of a malicious Passenger-managed application, SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows such applications to replace key files or directories in the spawning communication directory with symlinks. This then could result in arbitrary reads and writes, which in turn can result in information disclosure and privilege escalation.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2018-12026 is classified as CWE-59: Link Following. The software follows symbolic or hard links without verifying their target, so a planted link can redirect an operation to a sensitive file.

Affected software

CVE-2018-12026 is recorded against 1 package.

  • passenger (from 5.3.0 up to 5.3.2)

Timeline and source

Published on 14 May 2022 and last revised on 20 February 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
blog.phusion.nl (Web)
blog.phusion.nl (Web)
github.com (Package)
github.com (Web)
security.gentoo.org (Web)

Details

Severity CRITICAL
CVSS Score 9.5
CVSS Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-59
Public Exploit ✅ No
Source OSV
Published 2022-05-14
Updated 2026-08-12
Modified 2024-02-20
Fix URL N/A

Affected Packages

Software From version Fixed in
passenger 5.3.0 5.3.2

Similar Threats

Exploit Protection

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