Vulnerability in Samba Rsync
CVE-2017-17434
The daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, does not check for fnamecmp filenames in the daemon_filter_list data structure (in the recv_files function in receiver.c) and also does not apply the sanitize_paths protection mechanism to pathnames found in "xname follows" strings (in the read_ndx_and_attrs function in rsync.c), which allows remote attackers to bypass intended access restrictions.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.033 (88.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.033 · newest: 0.033 · change: 0.000
Affected products
- Samba Rsync
- Debian Linux — versions 8.0, 9.0
References
- git.samba.org/
- security.cucumberlinux.com/security/details.php (Third Party Advisory)
- www.debian.org/security/2017/dsa-4068 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2017/12/msg00020.html (mailing-list)
- git.samba.org/
Frequently asked questions
- What is CVE-2017-17434?
- CVE-2017-17434 is a critical-severity vulnerability in Samba Rsync. CVSS score: 9.8/10. Published 2017-12-06.
- How severe is CVE-2017-17434?
- Critical severity. CVSS v3 base score is 9.8 out of 10.