CVE-2021-28093
Published: 30 July 2021
Summary
CVE-2021-28093 is a medium-severity Inadequate Encryption Strength (CWE-326) vulnerability in Open-Xchange Open-Xchange Documents. Its CVSS base score is 6.5 (Medium).
Operationally, ranked at the 33.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-14797
Vulnerability details
OX Documents before 7.10.5-rev5 has Incorrect Access Control of converted images because hash collisions can occur, due to use of Adler32.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Maintaining currency with technologies and practices reduces selection of encryption mechanisms that provide inadequate strength.
Updated assessments identify when previously adequate encryption strength no longer meets current attack capabilities or compliance drivers.
Establishment procedures require selection and generation of keys with adequate length and strength for the chosen algorithm.
Specifies required cryptography types and parameters, preventing selection of inadequate encryption strength.
Prompt patching corrects inadequate encryption strength when vendors release updates that increase key sizes or algorithm security.