CVE-2017-16548
critical
CVSS v3
9.8
CVSS v2
7.5
VIR risk
9.8
Description
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.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2017-16548
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2017-16548.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201801-21
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 3.1.3pre1-1 | |
| sles | affected | | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| debian | 9.0 | affected | |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 16.04 | affected | |
| ubuntu | 17.10 | affected | |
| debian | bookworm | fixed | 3.1.2-2.1 |
| debian | bullseye | fixed | 3.1.2-2.1 |
| debian | forky | fixed | 3.1.2-2.1 |
| debian | sid | fixed | 3.1.2-2.1 |
| debian | trixie | fixed | 3.1.2-2.1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| samba | rsync | {"startExcluding":"2.6.9","endIncluding":"3.1.2"} | |
References
- https://security.archlinux.org/ASA-201801-21
- https://bugzilla.samba.org/show_bug.cgi?id=13112
- https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3Bh=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1
- https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html
- https://usn.ubuntu.com/3543-1/
- https://usn.ubuntu.com/3543-2/
- https://www.debian.org/security/2017/dsa-4068
- https://www.suse.com/security/cve/CVE-2017-16548.html
- https://security-tracker.debian.org/tracker/CVE-2017-16548
CWEs
CWE-125
Verify integrity in audit chain (admin only). AS-IS.