Vulnerability Details : CVE-2021-27342
An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
Products affected by CVE-2021-27342
- cpe:2.3:o:dlink:dir-842e_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-27342
0.32%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 67 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-27342
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2021-27342
-
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-27342
-
https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html
D-Link Router CVE-2021-27342 Vulnerability WriteupExploit;Third Party Advisory
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https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py
D-Link-CVE-2021-27342-exploit/dlink-telnet-exploit-CVE-2021-27342.py at main · guywhataguy/D-Link-CVE-2021-27342-exploit · GitHubExploit;Third Party Advisory
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https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225
D-Link Technical SupportVendor Advisory
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