High severity · published Mar 15, 2021
CVE-2021-27891
SSH Tectia Client and Server before 6.4.19 on Windows have weak key generation
8.8
CVSS
1.1%
EPSS
No
On KEV
Description
SSH Tectia Client and Server before 6.4.19 on Windows have weak key generation. ConnectSecure on Windows is affected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TC
Tectia Client · Ssh
before 6.4.19 · source: NVD
TC
Tectia Connectsecure · Ssh
All versions, or not specified · source: NVD
TS
Tectia Server · Ssh
before 6.4.19 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27891
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27891
Vendor Advisory
https://info.ssh.com/tectia-vulnerability-cve-2021-27891
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SSH Tectia Client and Server before 6.4.19 on Windows allow local privilege escalation
7.0
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SSH Tectia Client and Server before 6.4.19 on Windows allow local privilege escalation in nonstandard conditions
3.7
CVE-2008-5161
Error handling in the SSH protocol in (1) SSH Tectia Client and Server and Connector 4.0 through 4.4.11, 5.0 through 5.2.4, and 5.3 through 5.3.8; Client and Server and…
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ssh-signer in SSH Tectia Client and Server 5.x before 5.2.4, and 5.3.x before 5.3.6, on Unix and Linux allows local users to gain privileges via unspecified vectors
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CVE-2006-5484
SSH Tectia Client/Server/Connector 5.1.0 and earlier, Manager 2.2.0 and earlier, and other products, when using an RSA key with exponent 3, removes PKCS-1 padding before…