GNU Patch 2.7.6 patch Utility input validation

CVSS Meta Temp Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in GNU Patch 2.7.6. This issue affects some unknown processing of the component patch Utility. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2018-1000156. The attack needs to be launched locally. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU Patch 2.7.6. It has been declared as critical. This vulnerability affects an unknown functionality of the component patch Utility. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

GNU Patch version 2.7.6 contains an input validation vulnerability when processing patch files, specifically the EDITOR_PROGRAM invocation (using ed) can result in code execution. This attack appear to be exploitable via a patch file processed via the patch utility. This is similar to FreeBSD's CVE-2015-1418 however although they share a common ancestry the code bases have diverged over time.

The bug was discovered 04/06/2018. The weakness was published 04/06/2018 by Hanno Boeck (Website). The advisory is shared for download at savannah.gnu.org. This vulnerability was named CVE-2018-1000156 since 04/06/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 110753 (RHEL 7 : patch (RHSA-2018:2091)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197109 (Ubuntu Security Notification for Patch Vulnerabilities (USN-3624-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110753) and SecurityFocus (BID 103044†). Similar entries are available at VDB-113197 and VDB-113211. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110753
Nessus Name: RHEL 7 : patch (RHSA-2018:2091)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 861585
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1348-1] patch security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

02/03/2018 🔍
04/06/2018 +62 days 🔍
04/06/2018 +0 days 🔍
04/06/2018 +0 days 🔍
04/06/2018 +0 days 🔍
04/07/2018 +1 days 🔍
06/27/2018 +81 days 🔍
06/28/2018 +1 days 🔍
04/14/2025 +2482 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2018:2091
Researcher: Hanno Boeck
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1000156 (🔍)
GCVE (CVE): GCVE-0-2018-1000156
GCVE (VulDB): GCVE-100-115900
SecurityFocus: 103044 - GNU Patch 'src/pch.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 04/07/2018 09:58
Updated: 04/14/2025 22:23
Changes: 04/07/2018 09:58 (73), 07/29/2020 17:03 (7), 02/27/2023 09:34 (4), 02/27/2023 09:35 (1), 04/14/2025 22:23 (15)
Complete: 🔍
Cache ID: 216::103

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