CVE-2017-16548

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.51% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory ubuntu.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3Bh=47a63d90e71d3e19e0e96052bb8c6b9cb140ecc1
https://bugzilla.samba.org/show_bug.cgi?id=13112 issue tracking
https://usn.ubuntu.com/3543-1/ third party advisory vendor advisory
https://www.debian.org/security/2017/dsa-4068 third party advisory vendor advisory
https://usn.ubuntu.com/3543-2/ third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2017/12/msg00020.html third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2017-16548?
CVE-2017-16548 has been scored as a critical severity vulnerability.
How to fix CVE-2017-16548?
To fix CVE-2017-16548, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-16548 being actively exploited in the wild?
It is possible that CVE-2017-16548 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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