Vulnerability CVE-2021-31400


Published: 2021-08-19

Description:
An issue was discovered in tcp_pulloutofband() in tcp_in.c in HCC embedded InterNiche 4.0.1. The TCP out-of-band urgent-data processing function invokes a panic function if the pointer to the end of the out-of-band data points outside of the TCP segment's data. If the panic function hadn't a trap invocation removed, it will enter an infinite loop and therefore cause DoS (continuous loop or a device reset).

Type:

CWE-835

(Loop with Unreachable Exit Condition ('Infinite Loop'))

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Hcc-embedded -> Nichestack 

 References:
https://www.kb.cert.org/vuls/id/608209
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/

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