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CVE-2017-8805

30
FAUCET Score

CVE-2017-8805 describes a directory traversal vulnerability in Debian ftpsync versions prior to 20171017. The flaw stems from ftpsync's failure to utilize the rsync --safe-links option, enabling remote attackers to traverse directories via a malicious upstream mirror. This critical vulnerability, rated 9.1 CVSS, allows for high impact to confidentiality and integrity with low attack complexity and no user interaction required. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 20171016CPE matchmatch criteria
cpe:2.3:a:debian:ftpsync:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.1CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.02%
Probability of exploitation in next 30 days
EPSS Percentile
86.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0302 is in the 77th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

debianvendor investigatingvia nvd_reference
View patch

References

anonscm.debian.org / cgit/mirror/archvsync.git/commit
Issue TrackingPatchVendor Advisory
lists.debian.org / debian-mirrors/2017/10/msg00017.html
Issue TrackingMailing ListVendor Advisory
openwall.com / lists/oss-security/2017/10/17/2
Issue TrackingMailing ListPatchThird Party Advisory