CVE-2019-5429 — Untrusted search path in FileZilla before 3

Untrusted search path in FileZilla before 3.41.0-rc1 allows an attacker to gain privileges via a malicious 'fzsftp' binary in the user's home directory.

01What is this vulnerability?

Untrusted search path in FileZilla before 3.41.0-rc1 allows an attacker to gain privileges via a malicious 'fzsftp' binary in the user's home directory.

02Affected products

Vendor	Product	Versions
FileZilla	FileZilla	3.41.0-rc1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-04-29T14:13:02.000Z
• Last modified: 2024-08-04T19:54:53.465Z

09References

• www.tenable.com — https://www.tenable.com/security/research/tra-2019-14
• svn.filezilla-project.org — https://svn.filezilla-project.org/filezilla?view=revision&revision=9112
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• security.gentoo.org — https://security.gentoo.org/glsa/202007-51
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2022/05/msg00037.html