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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.16%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.16% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- samba/rsync · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
References
- https://bugzilla.samba.org/show_bug.cgi?id=13112Issue Tracking
- https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3Bh=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1
- https://lists.debian.org/debian-lts-announce/2017/12/msg00020.htmlThird Party Advisory
- https://usn.ubuntu.com/3543-1/Third Party Advisory
- https://usn.ubuntu.com/3543-2/Third Party Advisory
- https://www.debian.org/security/2017/dsa-4068Third Party Advisory
- https://bugzilla.samba.org/show_bug.cgi?id=13112Issue Tracking
- https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3Bh=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1
- https://lists.debian.org/debian-lts-announce/2017/12/msg00020.htmlThird Party Advisory
- https://usn.ubuntu.com/3543-1/Third Party Advisory
- https://usn.ubuntu.com/3543-2/Third Party Advisory
- https://www.debian.org/security/2017/dsa-4068Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.