Unrated severityNVD Advisory· Published Mar 1, 2021· Updated Aug 3, 2024
CVE-2021-25831
CVE-2021-25831
Description
A file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. An attacker must request the conversion of the crafted file from PPTT into PPTX format. Using the chain of two other bugs related to improper string handling, a remote attacker can obtain remote code execution on DocumentServer.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- ONLYOFFICE/DocumentServerdescription
- Range: >=4.0.0-9, <=5.6.3
Patches
Vulnerability mechanics
References
4- github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cppmitrex_refsource_MISC
- github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/Editor/BinaryFileReaderWriter.cppmitrex_refsource_MISC
- github.com/ONLYOFFICE/core/blob/v5.6.4.13/ASCOfficePPTXFile/PPTXFormat/Logic/Fills/BlipFill.cppmitrex_refsource_MISC
- github.com/merrychap/poc_exploits/tree/master/ONLYOFFICE/CVE-2021-25831mitrex_refsource_MISC
News mentions
0No linked articles in our index yet.