Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2021-21670 CVE-2021-21671 |
CWE-ID | CWE-264 CWE-384 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Jenkins Server applications / Application servers Jenkins LTS Server applications / Application servers |
Vendor | Jenkins |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU54491
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-21670
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to application does not properly impose security restrictions. A remote authenticated attacker can cancel queue items and abort builds of jobs for which they have Item/Cancel permission even when they do not have Item/Read permission.
MitigationInstall updates from vendor's website.
Vulnerable software versionsJenkins: 2.0 - 2.299
Jenkins LTS: 2.7.1 - 2.289.1
External linkshttp://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2278
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.
EUVDB-ID: #VU54492
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-21671
CWE-ID:
CWE-384 - Session Fixation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the affected product does not invalidate the existing session on login. A remote attacker can use social engineering techniques to gain administrator access to Jenkins.
MitigationInstall updates from vendor's website.
Vulnerable software versionsJenkins: 2.0 - 2.299
Jenkins LTS: 2.7.1 - 2.289.1
External linkshttp://www.jenkins.io/security/advisory/2021-06-30/#SECURITY-2371
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.