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CVE-2017-5223

Status Candidate

Overview

An issue was discovered in PHPMailer before 5.2.22. PHPMailer's msgHTML method applies transformations to an HTML document to make it usable as an email message body. One of the transformations is to convert relative image URLs into attachments using a script-provided base directory. If no base directory is provided, it resolves to /, meaning that relative image URLs get treated as absolute local file paths and added as attachments. To form a remote vulnerability, the msgHTML method must be called, passed an unfiltered, user-supplied HTML document, and must not set a base directory.

Related Files

Ubuntu Security Notice USN-5956-1
Posted Mar 16, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5956-1 - Dawid Golunski discovered that PHPMailer was not properly escaping user input data used as arguments to functions executed by the system shell. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 ESM. It was discovered that PHPMailer was not properly escaping characters in certain fields of the code_generator.php example code. An attacker could possibly use this issue to conduct cross-site scripting attacks. This issue was only fixed in Ubuntu 16.04 ESM and Ubuntu 18.04 ESM.

tags | advisory, arbitrary, shell, php, xss
systems | linux, ubuntu
advisories | CVE-2016-10033, CVE-2017-11503, CVE-2017-5223, CVE-2018-19296, CVE-2020-13625, CVE-2021-3603
SHA-256 | 222714e4ee696b2603d69df38c77117f2e5b2027b932d6a069bca47f30bd053c
Ubuntu Security Notice USN-5956-2
Posted Mar 16, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5956-2 - USN-5956-1 fixed vulnerabilities in PHPMailer. It was discovered that the fix for CVE-2017-11503 was incomplete. This update fixes the problem. Dawid Golunski discovered that PHPMailer was not properly escaping user input data used as arguments to functions executed by the system shell. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 ESM.

tags | advisory, arbitrary, shell, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-11503, CVE-2017-5223, CVE-2018-19296, CVE-2020-13625, CVE-2021-3603
SHA-256 | 80b3365b80c510d9ed0f8f67ed3b629ab7b2e844952fb217a7a549d591be9150
PHPMailer 5.2.21 Local File Disclosure
Posted Oct 26, 2017
Authored by Yongxiang Li, Maciej Krupa

PHPMailer versions 5.2.21 and below suffer from a file disclosure vulnerability.

tags | exploit
advisories | CVE-2017-5223
SHA-256 | eeaeefcdff3722b2ec1cf3d9459357dc5de426bb7f1c9fb2f39b503acf3a27d4
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