High severity · published Sep 27, 2023
CVE-2023-42820
JumpServer is an open source bastion host
8.2
CVSS
6.3%
EPSS
No
On KEV
Description
JumpServer is an open source bastion host. This vulnerability is due to exposing the random number seed to the API, potentially allowing the randomly generated verification codes to be replayed, which could lead to password resets. If MFA is enabled users are not affect. Users not using local authentication are also not affected. Users are advised to upgrade to either version 2.28.19 or to 3.6.5. There are no known workarounds or this issue.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.3% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JU
Jumpserver · Fit2cloud
2.24.0 before 2.28.19; 3.0.0 before 3.6.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-42820
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-42820
Patch
https://github.com/jumpserver/jumpserver/commit/42337f0d00b2a8d45ef063eb5b7deeef81597da5
Vendor Advisory
https://github.com/jumpserver/jumpserver/security/advisories/GHSA-7prv-g565-82qp
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