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Denial of service in Gitea



Published: 2020-05-22
Severity High
Patch available NO
Number of vulnerabilities 1
CVE ID CVE-2020-13246
CWE ID CWE-667
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Gitea
Web applications / Modules and components for CMS

Vendor The Gitea Authors

Security Advisory

This security advisory describes one high risk vulnerability.

1) Improper locking

Severity: High

CVSSv3: 7.1 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:U/RC:C] [PCI]

CVE-ID: CVE-2020-13246

CWE-ID: CWE-667 - Improper Locking

Exploit availability: Yes [Search exploit]

Description

The vulnerability allows a remote attacker to perform a denial of service attack (DoS) on the target system.

The vulnerability exists due to double-locking error. A remote attacker can exploit this vulnerability to cause a deadlock, resulting in a denial of service condition.

Mitigation

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

Vulnerable software versions

Gitea: 1.11.0, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5

CPE External links

https://github.com/go-gitea/gitea/issues/10549
https://github.com/go-gitea/gitea/pull/11438
https://www.youtube.com/watch?v=DmVgADSVS88

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. However, proof of concept for this vulnerability is available.



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