rsync up to 3.1.2/3.1.3-dev Daemon receiver.c recv_files Filename access control

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in rsync up to 3.1.2/3.1.3-dev. It has been rated as critical. This issue affects the function recv_files of the file receiver.c of the component Daemon. This manipulation as part of Filename causes access control. This vulnerability is tracked as CVE-2017-17433. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in rsync up to 3.1.2/3.1.3-dev (File Transfer Software). It has been declared as critical. Affected by this vulnerability is the function recv_files of the file receiver.c of the component Daemon. The manipulation as part of a Filename leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The recv_files function in receiver.c in the daemon in rsync 3.1.2, and 3.1.3-development before 2017-11-03, proceeds with certain file metadata updates before checking for a filename in the daemon_filter_list data structure, which allows remote attackers to bypass intended access restrictions.

The bug was discovered 11/03/2017. The weakness was disclosed 12/06/2017 (Website). The advisory is shared at security.cucumberlinux.com. This vulnerability is known as CVE-2017-17433 since 12/05/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 105406 (FreeBSD : rsync -- multiple vulnerabilities (72fff788-e561-11e7-8097-0800271d4b9c)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176254 (Debian Security Update for rsync (DSA 4068-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105406). The entries VDB-109150 and VDB-110258 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 3.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105406
Nessus Name: FreeBSD : rsync -- multiple vulnerabilities (72fff788-e561-11e7-8097-0800271d4b9c)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 65795
OpenVAS Name: Debian Security Advisory DSA 4068-1 (rsync - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: 3e06d40029cfdce9d0f73d87cfd4edaf54be9c51

Timelineinfo

11/03/2017 🔍
11/03/2017 +0 days 🔍
12/05/2017 +32 days 🔍
12/05/2017 +0 days 🔍
12/06/2017 +1 days 🔍
12/06/2017 +0 days 🔍
12/21/2017 +15 days 🔍
01/17/2023 +1853 days 🔍

Sourcesinfo

Advisory: DLA 1218-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-17433 (🔍)
GCVE (CVE): GCVE-0-2017-17433
GCVE (VulDB): GCVE-100-110257

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 12/06/2017 16:42
Updated: 01/17/2023 08:34
Changes: 12/06/2017 16:42 (75), 12/12/2019 10:23 (2), 01/17/2023 08:34 (6)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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