Vulnerability Details : CVE-2017-8805
Debian ftpsync before 20171017 does not use the rsync --safe-links option, which allows remote attackers to conduct directory traversal attacks via a crafted upstream mirror.
Vulnerability category: Directory traversal
Products affected by CVE-2017-8805
- cpe:2.3:a:debian:ftpsync:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-8805
0.30%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 53 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-8805
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.4
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:P/A:N |
10.0
|
4.9
|
NIST | |
|
9.1
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
3.9
|
5.2
|
NIST |
CWE ids for CVE-2017-8805
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-8805
-
http://www.openwall.com/lists/oss-security/2017/10/17/2
oss-security - CVE-2017-8805: Unsafe symlinks not filtered in Debian mirror script ftpsyncIssue Tracking;Mailing List;Patch;Third Party Advisory
-
https://lists.debian.org/debian-mirrors/2017/10/msg00017.html
New ftpsync version 20171017 (security update)Issue Tracking;Mailing List;Vendor Advisory
-
https://anonscm.debian.org/cgit/mirror/archvsync.git/commit/?id=d1ca2ab2210990b6dfb664cd6776a41b71c48016
Ask rsync to only allow save symlinks (d1ca2ab2) · Commits · Debian Mirror team / archvsync · GitLabIssue Tracking;Patch;Vendor Advisory
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