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CVE-2024-48917
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CVE-2024-48917
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner
class has a scan method which should prevent XXE attacks. However, in a bypass of the previously reported CVE-2024-47873
, the regexes from the findCharSet
method, which is used for determining the current encoding can be bypassed by using a payload in the encoding UTF-7, and adding at end of the file a comment with the value encoding="UTF-8"
with "
, which is matched by the first regex, so that encoding='UTF-7'
with single quotes '
in the XML header is not matched by the second regex. An attacker can bypass the sanitizer and achieve an XML external entity attack. Versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0 fix the issue.
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CVSS V3 Severity and Metrics
General Information
Vendors
- PHPOffice
Products
- PhpSpreadsheet
References
Miscellaneous
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below: