CVE-2020-8866

CVSS 4.3 MEDIUMEPSS 9.6%CWE-434

Vexday Risk Score

33Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 4.3EPSS 9.6%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

11 Mar 2020Public PoC

23 Mar 2020Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Affected products

Horde · Groupware Webmail Edition

public PoCs found — 2

exploitdbwww.exploit-db.com/exploits/48210unverified exploitdbwww.exploit-db.com/exploits/48209unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://lists.debian.org/debian-lts-announce/2020/03/msg00036.html https://lists.horde.org/archives/announce/2020/001288.html https://www.zerodayinitiative.com/advisories/ZDI-20-275/