CVE-2020-15254
October 16, 2020
Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that "Vec::from_iter" has allocated capacity that same as the number of iterator elements. "Vec::from_iter" does not actually guarantee that and may allocate extra memory. The destructor of the "bounded" channel reconstructs "Vec" from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when "Vec::from_iter" has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4.
Affected Packages
crossbeam-channel (RUST):
Affected version(s) =0.4.3 <0.4.4Fix Suggestion:
Update to version 0.4.4Related Resources (9)
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Contact UsCVSS v4
Base Score:
9.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
CVSS v2
Base Score:
7.5
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
EPSS
Base Score:
0.51
