CVE-2014-8517
HighPublic exploitThe fetch_url function in usr.bin/ftp/fetch.c in tnftp, as used in NetBSD 5.1 through 5.1.4, 5.2 through 5.2.2, 6.0 through 6.0.6, and 6.1 through 6.1.5 allows remote attackers to execute arbitrary commands via a | (pipe) character at the end of an HTTP redirect.
Published Nov 17, 2014 · Updated Aug 11, 2026 · Also known as DEBIAN-CVE-2014-8517
Key Facts
Patch immediately- CVE-2014-8517 is a high-severity vulnerability (CVSS 7.5 v2) affecting Mac OS X (Apple), Netbsd, tnftp (debian).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 69% probability of exploitation in the next 30 days.
- Fixed versions are available, including tnftp 20130505-2, tnftp 20151004-1.3.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
69%
Higher than 99.3% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2014-8517 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The fetch_url function in usr.bin/ftp/fetch.c in tnftp, as used in NetBSD 5.1 through 5.1.4, 5.2 through 5.2.2, 6.0 through 6.0.6, and 6.1 through 6.1.5 allows remote attackers to execute arbitrary commands via a | (pipe) character at the end of an HTTP redirect.
Affected Products
37 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Mac OS XApple | 10.10.0, 10.10.1, 10.8.5, 10.9.5 | n/a |
| NetbsdNetbsd | 5.1, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.2, 5.2.1, 5.2.2 | n/a |
| tnftpdebian | See advisory | 20130505-2 |
Patched Releases
tnftp
20130505-2, 20151004-1.3
Timeline
Publicly disclosed
Nov 17, 2014
Last updated
Aug 11, 2026
Weakness Type
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
References
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2014-8517
- patchNetBSD-SA2014-013
- exploitMSF tnftp_savefile.rb
- exploitExploitDB-35427
- exploitExploitDB-43112
FAQ
Common Questions.
The fetch_url function in usr.bin/ftp/fetch.c in tnftp, as used in NetBSD 5.1 through 5.1.4, 5.2 through 5.2.2, 6.0 through 6.0.6, and 6.1 through 6.1.5 allows remote attackers to execute arbitrary commands via a | (pipe) character at the end of an HTTP redirect.
Affected: Mac OS X (Apple) versions 10.10.0, 10.10.1, 10.8.5, 10.9.5; Netbsd versions 5.1, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.2, 5.2.1, 5.2.2; tnftp (debian). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including tnftp 20130505-2, tnftp 20151004-1.3.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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