CVE-2020-13432
What it is
rejetto HFS (aka HTTP File Server) v2.3m Build #300, when virtual files or folders are used, allows remote attackers to trigger an invalid-pointer write access violation via concurrent HTTP requests with a long URI or long HTTP headers.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 30.9% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 30.9% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 30.9% · EPSS, next 30 days
- Weakness
- CWE-120 · Classic buffer overflow
- Record status
- Modified
Affected
- Rejetto Http File Server 2.3m
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2020-13432.md and follow it. Check whether this project is affected by CVE-2020-13432. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5de
- https://www.rejetto.com/hfs/?f=wn
- https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5de
- https://www.rejetto.com/hfs/?f=wn
References
- http://hyp3rlinx.altervista.org/advisories/HFS-HTTP-FILE-SERVER-v2.3-REMOTE-BUFFER-OVERFLOW-DoS.txt
- http://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html
- http://seclists.org/fulldisclosure/2020/Jun/13
- http://seclists.org/fulldisclosure/2021/Apr/12
- https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5de
- https://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html
- https://www.rejetto.com/hfs/?f=wn
- http://hyp3rlinx.altervista.org/advisories/HFS-HTTP-FILE-SERVER-v2.3-REMOTE-BUFFER-OVERFLOW-DoS.txt
- http://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html
- http://seclists.org/fulldisclosure/2020/Jun/13
- http://seclists.org/fulldisclosure/2021/Apr/12
- https://github.com/rejetto/hfs2/commit/b8ebfc4e22948e1a61506cd66e397b61ea5ea5de
- https://packetstormsecurity.com/files/157980/HFS-Http-File-Server-2.3m-Build-300-Buffer-Overflow.html
- https://www.rejetto.com/hfs/?f=wn