Out-of-bounds Read in Samba Rsync
CVE-2017-16548
The receive_xattr function in xattrs.c in rsync 3.1.2 and 3.1.3-development does not check for a trailing '\0' character in an xattr name, which allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) or possibly have unspecified other impact by sending crafted data to the daemon.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.058 (93.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.058 · newest: 0.058 · change: 0.000
Affected products
- Samba Rsync
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.samba.org/rsync.git/
- bugzilla.samba.org/show_bug.cgi (Issue Tracking)
- usn.ubuntu.com/3543-1/ (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2017/dsa-4068 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3543-2/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2017/12/msg00020.html (mailing-list, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-16548?
- CVE-2017-16548 is a critical-severity vulnerability in Samba Rsync, classified under Out-of-bounds Read. CVSS score: 9.8/10. Published 2017-11-06.
- How severe is CVE-2017-16548?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-16548 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.