A weakness has been identified in xlnt-community xlnt up to 1.6.1. Impacted is the function xlnt::detail::binary_writer::append of the file source/detail/binary.hpp of the component Compound Document Parser. This manipulation causes heap-based buffer overflow.
The attack can only be executed locally. The exploit has been made available to the public and could be used for attacks. Patch name: 147.
It is suggested to install a patch to address 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 8
https://github.com/oneafter/0128/blob/main/xl2/repro
cna@vuldb.com
https://github.com/xlnt-community/xlnt/
cna@vuldb.com
https://github.com/xlnt-community/xlnt/issues/138
cna@vuldb.com
https://github.com/xlnt-community/xlnt/issues/138#issuecomment-3868381672
cna@vuldb.com
https://github.com/xlnt-community/xlnt/pull/147
cna@vuldb.com
https://vuldb.com/?ctiid.348530
cna@vuldb.com
https://vuldb.com/?id.348530
cna@vuldb.com
https://vuldb.com/?submit.764643
cna@vuldb.com