Critical severity · published May 12, 2021
CVE-2020-35198
An issue was discovered in Wind River VxWorks 7
9.8
CVSS
2.5%
EPSS
No
On KEV
Description
An issue was discovered in Wind River VxWorks 7. The memory allocator has a possible integer overflow in calculating a memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.5% · higher than 85% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CE
Communications Eagle · Oracle
46.8.0 through 46.8.2; 46.9.1 through 46.9.3; 46.7.0 · source: NVD
VX
Vxworks · Windriver
6.9 before 6.9.4.12; 7.0 before 21.03; 6.9.4.12; 6.9.4.12; 6.9.4.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35198
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35198
Vendor Advisory
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2020-35198
Vendor Advisory
https://support2.windriver.com/index.php?page=security-notices
Patch
https://www.oracle.com/security-alerts/cpuapr2022.html
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7.3
CVE-2020-28895
In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc()