Debian postgresql-common prior 181+deb9u1 Symbolic Link link following

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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Debian postgresql-common. It has been declared as problematic. This affects an unknown function of the component Symbolic Link Handler. Such manipulation leads to link following. This vulnerability is traded as CVE-2017-8806. An attack has to be approached locally. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Debian postgresql-common (Database Software). It has been rated as problematic. Affected by this issue is some unknown processing of the component Symbolic Link Handler. The manipulation with an unknown input leads to a link following vulnerability. Using CWE to declare the problem leads to CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. Impacted is integrity, and availability. CVE summarizes:

The Debian pg_ctlcluster, pg_createcluster, and pg_upgradecluster scripts, as distributed in the Debian postgresql-common package before 181+deb9u1 for PostgreSQL (and other packages related to Debian and Ubuntu), handled symbolic links insecurely, which could result in local denial of service by overwriting arbitrary files.

The bug was discovered 11/09/2017. The weakness was shared 11/13/2017 (Website). The advisory is shared for download at metadata.ftp-master.debian.org. This vulnerability is handled as CVE-2017-8806 since 05/07/2017. The attack needs to be approached locally. Required for exploitation is a simple authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 104496 (Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : postgresql-common vulnerabilities (USN-3476-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196968 (Ubuntu Security Notification for Postgresql-common Vulnerabilities (USN-3476-1)).

Upgrading to version 181+deb9u1 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 databases at Tenable (104496), SecurityFocus (BID 101810†) and CERT Bund (WID-SEC-2024-0143). The entry VDB-110200 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

  • Open Source CentOS
  • Debian Linux
  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • Oracle Linux
  • Open Source PostgreSQL
  • IBM Security Verify Access
  • Dell NetWorker

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.4
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104496
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.04 / 17.10 : postgresql-common vulnerabilities (USN-3476-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841749
OpenVAS Name: Ubuntu Update for postgresql-common USN-3476-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: postgresql-common 181+deb9u1

Timelineinfo

05/07/2017 🔍
11/09/2017 +186 days 🔍
11/09/2017 +0 days 🔍
11/10/2017 +1 days 🔍
11/13/2017 +3 days 🔍
11/13/2017 +0 days 🔍
11/13/2017 +0 days 🔍
11/13/2017 +0 days 🔍
08/02/2025 +2819 days 🔍

Sourcesinfo

Vendor: debian.org

Advisory: USN-3476-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-8806 (🔍)
GCVE (CVE): GCVE-0-2017-8806
GCVE (VulDB): GCVE-100-109304

OVAL: 🔍

SecurityFocus: 101810 - Debian Postgresql-common CVE-2017-8806 Multiple Insecure Temporary File Handling Vulnerabilities
CERT Bund: WID-SEC-2024-0143 - PostgreSQL: Mehrere Schwachstellen

See also: 🔍

Entryinfo

Created: 11/13/2017 17:00
Updated: 08/02/2025 16:49
Changes: 11/13/2017 17:00 (74), 12/05/2019 17:03 (5), 01/10/2023 09:31 (4), 01/10/2023 09:33 (1), 08/02/2025 16:49 (24)
Complete: 🔍
Cache ID: 216:807:103

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