PHPMailer up to 5.2.26/6.0.5 Object input validation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in PHPMailer up to 5.2.26/6.0.5. This affects an unknown part of the component Object Handler. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2018-19296. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in PHPMailer up to 5.2.26/6.0.5. This vulnerability affects an unknown code block of the component Object Handler. 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:

PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.

The bug was discovered 11/16/2018. The weakness was shared 11/16/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-19296 since 11/15/2018. 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 119155 (Fedora 27 : php-phpmailer6 (2018-46b92c9064)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176831 (Debian Security Update for libphp-phpmailer (DLA 1591-1)).

Upgrading to version 5.2.27 or 6.0.6 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119155) and SecurityFocus (BID 95328†). The entry VDB-95359 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• PHPMailer

Version

• 5.2.0
• 5.2.1
• 5.2.2
• 5.2.3
• 5.2.4
• 5.2.5
• 5.2.6
• 5.2.7
• 5.2.8
• 5.2.9
• 5.2.10
• 5.2.11
• 5.2.12
• 5.2.13
• 5.2.14
• 5.2.15
• 5.2.16
• 5.2.17
• 5.2.18
• 5.2.19
• 5.2.20
• 5.2.21
• 5.2.22
• 5.2.23
• 5.2.24
• 5.2.25
• 5.2.26
• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5

Website

• Product: https://github.com/PHPMailer/PHPMailer/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 119155
Nessus Name: Fedora 27 : php-phpmailer6 (2018-46b92c9064)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: PHPMailer 5.2.27/6.0.6

Timelineinfo

01/10/2017 🔍
11/15/2018 +674 days 🔍
11/16/2018 +1 days 🔍
11/16/2018 +0 days 🔍
11/16/2018 +0 days 🔍
11/17/2018 +1 days 🔍
11/27/2018 +10 days 🔍
11/27/2018 +0 days 🔍
06/06/2023 +1652 days 🔍

Sourcesinfo

Product: github.com

Advisory: FEDORA-2018-46b92c9064
Status: Confirmed

CVE: CVE-2018-19296 (🔍)
GCVE (CVE): GCVE-0-2018-19296
GCVE (VulDB): GCVE-100-126964

OVAL: 🔍

SecurityFocus: 95328 - PHPMailer CVE-2017-5223 Local Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 11/17/2018 11:26
Updated: 06/06/2023 18:15
Changes: 11/17/2018 11:26 (74), 04/13/2020 20:16 (4), 06/06/2023 18:08 (5), 06/06/2023 18:15 (1)
Complete: 🔍
Cache ID: 216:8A7:103

Once again VulDB remains the best source for vulnerability data.

Discussion

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