Safemode Gem में अस्वीकृत इनपुट की अधूरी सूची है

The impact of CVE-2017-7540 is significant. An attacker exploiting this vulnerability could delete critical infrastructure components managed by Foreman, disrupting operations and potentially causing data loss. The ability to bypass safe mode restrictions also opens the door to privilege escalation, allowing an attacker to gain unauthorized access to sensitive data and systems. This bypass is achieved through the use of special Ruby syntax, making it difficult to detect without proper security controls. The potential for widespread disruption makes this a high-priority vulnerability to address.

Organizations heavily reliant on Foreman for infrastructure management are particularly at risk. Environments with legacy Foreman installations or those that have not implemented robust access controls are also more vulnerable. Shared hosting environments utilizing Foreman pose a significant risk due to the potential for cross-tenant exploitation.

• ruby / server:

find /opt/foreman/embedded/lib/ruby/gems -name 'safemode.rb' -print0 | xargs -0 grep -i 'eval' 

• ruby / supply-chain:

curl -s https://rubygems.org/gems/safemode/versions.html | grep '1.3.1' 

1. 2017-10-24Disclosure

   disclosure

2. 2017-10-24Patch

   patch

1. प्रकाशित2017-10-24
2. संशोधित2024-02-16
3. EPSS अद्यतन2026-04-02

The primary mitigation for CVE-2017-7540 is to upgrade Foreman to version 1.3.2 or later, which contains the fix for this vulnerability. If upgrading is not immediately feasible, consider implementing stricter access controls within Foreman to limit the potential impact of a successful exploit. Review and audit existing Foreman configurations to identify any potential misconfigurations that could exacerbate the vulnerability. While a direct WAF rule is unlikely, implementing general input validation rules can help prevent the injection of malicious Ruby code. After upgrading, confirm the fix by attempting to execute a potentially malicious Ruby command within Foreman and verifying that safe mode restrictions are enforced.