Local User Exploitation in Sudo Tool Affects Sudoers Plugin
CVE-2015-8239

7HIGH

Key Information:

Vendor
Sudo Project
Status
Sudo
Vendor
CVE Published:
10 October 2017

Badges

👾 Exploit Exists🟡 Public PoC

Summary

The vulnerability in the sudoers plugin of Sudo versions from 1.8.7 onwards allows local users with write permissions on specific commands to replace them before execution. This issue can lead to unauthorized access and execution of commands, undermining system security. It highlights the importance of proper permission settings and user role management to prevent potential misuse.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

sudo_digest_toctou_poc_CVE-2015-8239
Created by justinsteven

References

https://www.sudo.ws/repos/sudo/rev/397722cdd7ec
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https://www.sudo.ws/repos/sudo/rev/0cd3cc8fa195
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https://bugzilla.redhat.com/show_bug.cgi?id=1283635
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CVSS V3.1

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.