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Pyro mishandles pid files in temporary directory locations and opening the pid file as root

High severity GitHub Reviewed Published Aug 21, 2018 to the GitHub Advisory Database • Updated Oct 15, 2024

Package

pip pyro (pip)

Affected versions

< 3.15

Patched versions

3.15

Description

pyro before 3.15 unsafely handles pid files in temporary directory locations and opening the pid file as root. An attacker can use this flaw to overwrite arbitrary files via symlinks.

References

Published to the GitHub Advisory Database Aug 21, 2018
Reviewed Jun 16, 2020
Last updated Oct 15, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.214%
(59th percentile)

Weaknesses

CVE ID

CVE-2011-2765

GHSA ID

GHSA-xrr4-74mc-rpjc

Source code

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