grav Server-side Template Injection (SSTI) mitigation bypass

Summary The fix for SSTI using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value from isDangerousFunction, which allows to execute the payload prepending double backslash \ Details The isDangerousFunction check in...

GHSA-9436-3GMP-4F53 grav Server-side Template Injection (SSTI) mitigation bypass

Summary The fix for SSTI using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value from isDangerousFunction, which allows to execute the payload prepending double backslash \ Details The isDangerousFunction check in...

CVE-2023-37897

Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection SSTI vulnerability. The fix for another SSTI vulnerability using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value fr...

Design/Logic Flaw

Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection SSTI vulnerability. The fix for another SSTI vulnerability using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value fr...

CVE-2023-37897 Server-side Template Injection (SSTI) in grav

Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection SSTI vulnerability. The fix for another SSTI vulnerability using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value fr...

CVE-2023-37897 Server-side Template Injection (SSTI) in grav

Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection SSTI vulnerability. The fix for another SSTI vulnerability using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value fr...

CVE-2023-37897

Grav SSTI CVE-2023-37897 affects Grav’s Twig engine due to a denial-list bypass introduced in the fix for a prior SSTI vulnerability. The isDangerousFunction() function returns false when a backslash is found, allowing payloads such as {{ ['id'] | map('\system') | join() }} to bypass the denylist...

CVE-2023-37897 Server-side Template Injection (SSTI) in grav

Grav is a file-based Web-platform built in PHP. Grav is subject to a server side template injection SSTI vulnerability. The fix for another SSTI vulnerability using |map, |filter and |reduce twigs implemented in the commit 71bbed1 introduces bypass of the denylist due to incorrect return value fr...

Grav 安全漏洞

Grav is an extensible CMS Content Management System for personal blogs, small content publishing platforms, and one-page product displays. A security vulnerability exists in Grav 1.7.42.1 and earlier versions, which stems from a denial list isDangerousFunction being bypassed by returning an...

Server-side Template Injection(SSTI)

getgrav/grav is vulnerable to Server-side Template Injection SSTI. An authenticated remote attacker is able to cause server side template injection via the Twig engine which renders risky functions by default, such as system. Insufficient fix in addressing CVE-2022-2073 allows the bypass of the...

Server-Side Template Injection (SSTI)

getgrav/grav is vulnerable to Server-Side Template Injection SSTI. The vulnerability exists because the Filter function of GravExtension.php does not properly block the other built-in functions exposed by Twig's Core Extension, which allows an attacker to invoke arbitrary unsafe functions, leadin...

GHSA-WHR7-M3F8-MPM8 Grav Server-side Template Injection (SSTI) via Twig Default Filters

Hi, actually we have sent the bug report to [email protected] on 27th March 2023 and on 10th April 2023. Grav Server-side Template Injection SSTI via Twig Default Filters Summary: | Product | Grav CMS | | ----------------------- | --------------------------------------------- | | Vendor | Grav...

Grav Server-side Template Injection (SSTI) via Twig Default Filters

Hi, actually we have sent the bug report to [email protected] on 27th March 2023 and on 10th April 2023. Grav Server-side Template Injection SSTI via Twig Default Filters Summary: | Product | Grav CMS | | ----------------------- | --------------------------------------------- | | Vendor | Grav...

GHSA-J3V8-V77F-FVGM Grav Server-side Template Injection (SSTI) via Denylist Bypass Vulnerability

Hi, actually we have sent the bug report to [email protected] on 27th March 2023 and on 10th April 2023. Grav Server-side Template Injection SSTI via Denylist Bypass Vulnerability Summary: | Product | Grav CMS | | ----------------------- | --------------------------------------------- | | Vend...

Grav Server-side Template Injection (SSTI) via Denylist Bypass Vulnerability

Hi, actually we have sent the bug report to [email protected] on 27th March 2023 and on 10th April 2023. Grav Server-side Template Injection SSTI via Denylist Bypass Vulnerability Summary: | Product | Grav CMS | | ----------------------- | --------------------------------------------- | | Vend...

Grav Server-side Template Injection (SSTI) via Twig Default Filters

Hi, actually we have sent the bug report to [email protected] on 27th March 2023 and on 10th April 2023. Grav Server-side Template Injection SSTI via Insufficient Validation in filterFilter Summary: | Product | Grav CMS | | ----------------------- | --------------------------------------------...

GHSA-96XV-RMWJ-6P9W Grav Server-side Template Injection (SSTI) via Twig Default Filters

Hi, actually we have sent the bug report to [email protected] on 27th March 2023 and on 10th April 2023. Grav Server-side Template Injection SSTI via Insufficient Validation in filterFilter Summary: | Product | Grav CMS | | ----------------------- | --------------------------------------------...

CVE-2023-34448

Grav is a flat-file content management system. Prior to version 1.7.42, the patch for CVE-2022-2073, a server-side template injection vulnerability in Grav leveraging the default filter function, did not block other built-in functions exposed by Twig's Core Extension that could be used to invoke...

CVE-2023-34452

Grav is a flat-file content management system. In versions 1.7.42 and prior, the "/forgotpassword" page has a self-reflected cross-site scripting vulnerability that can be exploited by injecting a script into the "email" parameter of the request. While this vulnerability can potentially allow an...

CVE-2023-34253

Grav is a flat-file content management system. Prior to version 1.7.42, the denylist introduced in commit 9d6a2d to prevent dangerous functions from being executed via injection of malicious templates was insufficient and could be easily subverted in multiple ways -- 1 using unsafe functions that...