A vulnerability was found in xlnt-community xlnt up to 1.6.1. This issue affects the function xlnt::detail::compound_document_istreambuf::xsgetn of the file source/detail/cryptography/compound_document.cpp of the component XLSX File Parser. Performing a manipulation results in out-of-bounds read.
The attack is only possible with local access. The exploit has been made public and could be used. The patch is named 147.
It is recommended to apply a patch to fix this issue.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 7
https://github.com/oneafter/0128/blob/main/xl3/repro
cna@vuldb.com
https://github.com/xlnt-community/xlnt/
cna@vuldb.com
https://github.com/xlnt-community/xlnt/issues/139
cna@vuldb.com
https://github.com/xlnt-community/xlnt/pull/147
cna@vuldb.com
https://vuldb.com/?ctiid.349552
cna@vuldb.com
https://vuldb.com/?id.349552
cna@vuldb.com
https://vuldb.com/?submit.764644
cna@vuldb.com