Buffer Over-read Vulnerability in Rsync Daemon Affecting Multiple Versions
CVE-2017-16548

9.8CRITICAL

Key Information:

Vendor

Samba

Status
Rsync
Vendor
CVE Published:
6 November 2017

What is CVE-2017-16548?

The receive_xattr function in xattrs.c of rsync versions 3.1.2 and 3.1.3-development lacks proper validation for the null terminator in xattr names. This oversight opens the door for remote attackers to exploit the daemon, potentially leading to denial of service conditions such as heap-based buffer over-reads and application crashes. Attackers can trigger these vulnerabilities by sending specially crafted data, which may further result in unknown additional impacts on the system.

References

https://git.samba.org/rsync.git/?p=rsync.git%3Ba=commit%3...
x_refsource_CONFIRM
https://bugzilla.samba.org/show_bug.cgi?id=13112
x_refsource_CONFIRM
https://usn.ubuntu.com/3543-1/
vendor-advisoryx_refsource_UBUNTU

EPSS Score

5% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.