#VU36172 Information disclosure in Pagure - CVE-2019-7628

Vulnerability identifier: #VU36172

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-7628

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Pagure
Web applications / Other software

Vendor: Pagure

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Pagure 5.2 leaks API keys by e-mailing them to users. Few e-mail servers validate TLS certificates, so it is easy for man-in-the-middle attackers to read these e-mails and gain access to Pagure on behalf of other users. This issue is found in the API token expiration reminder cron job in files/api_key_expire_mail.py; disabling that job is also a viable solution. (E-mailing a substring of the API key was an attempted, but rejected, solution.)

Mitigation
Install update from vendor's website.

Vulnerable software versions

Pagure: 5.2

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External links
https://pagure.io/pagure/c/9905fb1e64341822366b6ab1d414d2baa230af0a
https://pagure.io/pagure/issue/4230
https://pagure.io/pagure/issue/4252
https://pagure.io/pagure/issue/4253
https://pagure.io/pagure/pull-request/4254

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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.