Full Report
CISA warns that threat actors are exploiting a high-severity vulnerability in PaperCut NG/MF print management software, which can allow them to gain remote code execution in cross-site request forgery (CSRF) attacks. [...]
Analysis Summary
# Vulnerability: PaperCut Remote Code Execution (RCE) Exploited in Attacks
## CVE Details
- CVE ID: CVE-2023-27350
- CVSS Score: [Score not explicitly provided, but implied critical due to RCE and active exploitation]
- CWE: [CWE not explicitly provided]
## Affected Systems
- Products: PaperCut NG and PaperCut MF (PaperCut Printing Servers)
- Versions: Specific vulnerable versions are not listed, but all versions lacking the patch are affected.
- Configurations: Vulnerability is exploited via the 'Print Archiving' feature.
## Vulnerability Description
This vulnerability is a Remote Code Execution (RCE) flaw existing within PaperCut's printing servers, specifically leveraged through the 'Print Archiving' feature. Threat actors can exploit this to execute arbitrary code on the affected server systems.
## Exploitation
- Status: Exploited in the wild (Confirmed by CISA and FBI involvement).
- Complexity: Not specified, but RCE exploitation is typically considered Medium to High.
- Attack Vector: Network (Implied, as it targets a network service).
## Impact
- Confidentiality: High (RCE typically allows full system compromise).
- Integrity: High (RCE allows modification or destruction of data/systems).
- Availability: High (RCE can lead to system downtime or ransomware deployment).
## Remediation
### Patches
- Specific patch versions are not detailed in the summary, but users must apply the official PaperCut security updates released to fix CVE-2023-27350.
### Workarounds
- No specific workarounds were detailed in the provided text, but patching is strongly urged due to active exploitation.
## Detection
- **Indicators of Compromise:** Presence of unauthorized access or execution related to PaperCut accounts, potential deployment of malware (e.g., Bl00dy Ransomware).
- **Detection Methods and Tools:** Organizations should monitor network traffic and system logs around PaperCut services for unusual activity patterns indicative of exploitation attempts targeting the Print Archiving function.
## References
- Vendor Advisories: PaperCut security advisories concerning CVE-2023-27350.
- Relevant Links:
- CISA statement referencing CVE-2023-27350 as actively exploited: cisa gov/news-events/alerts/2023/04/21/cisa-adds-three-known-exploited-vulnerabilities-catalog
- Joint advisory regarding Bl00dy Ransomware exploitation: bleepingcomputer com/news/security/fbi-bl00dy-ransomware-targets-education-orgs-in-papercut-attacks/