Multiple vulnerabilities in Gitlab Authentication plugin for Jenkins



| Updated: 2019-10-04
Risk Medium
Patch available NO
Number of vulnerabilities 2
CVE-ID CVE-2019-10371
CVE-2019-10372
CWE-ID CWE-384
CWE-601
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Gitlab Authentication
Client/Desktop applications / Software for system administration

Vendor Jenkins

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Session Fixation

EUVDB-ID: #VU21542

Risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10371

CWE-ID: CWE-384 - Session Fixation

Exploit availability: No

Description

The vulnerability allows a remote attacker to steal authenticated sessions.

The vulnerability exists due to the the affected software does not invalidate the previous session and create a new one upon successful login. A remote attacker able to control or obtain another user’s pre-login session ID can impersonate them.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Gitlab Authentication: 0.1 - 1.4

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2019/08/07/1
https://jenkins.io/security/advisory/2019-08-07/#SECURITY-795


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.

2) Open redirect

EUVDB-ID: #VU21543

Risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10372

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in "GitLabSecurityRealm.java". A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects users to a URL outside Jenkins after successful login.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Gitlab Authentication: 0.1 - 1.4

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2019/08/07/1
https://jenkins.io/security/advisory/2019-08-07/#SECURITY-796


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.



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