Information disclosure in jenkins (Alpine package)



Published: 2021-01-14
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-21602
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
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jenkins (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU49527

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21602

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in workspace browsers. A remote authenticated attacker can create symbolic links that allow them to access files outside workspaces using the workspace browser.

Mitigation

Install update from vendor's website.

Vulnerable software versions

jenkins (Alpine package): 2.73.3-r0 - 2.275-r0

External links

http://git.alpinelinux.org/aports/commit/?id=dc5a6fe29b770608c4b2c0e2681a71db5650e84b


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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