Symfony up to 4.4.12/5.1.4 HttpClient CachingHttpClient Response Remote Privilege Escalation

entryeditHistoryDiffjsonxmlCTI
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.
5.9$0-$5k0.00

A vulnerability was found in Symfony up to 4.4.12/5.1.4 and classified as critical. This issue affects the function CachingHttpClient of the component HttpClient. The manipulation as part of a Response leads to a unknown weakness. Using CWE to declare the problem leads to CWE-212. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Symfony before versions 4.4.13 and 5.1.5, the CachingHttpClient class from the HttpClient Symfony component relies on the HttpCache class to handle requests. HttpCache uses internal headers like X-Body-Eval and X-Body-File to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by CachingHttpClient and if an attacker can control the response for a request being made by the CachingHttpClient, remote code execution is possible. This has been fixed in versions 4.4.13 and 5.1.5.

The weakness was disclosed 09/02/2020 (GitHub Repository). The advisory is shared at github.com. The identification of this vulnerability is CVE-2020-15094 since 06/25/2020. The exploitation is known to be difficult. The attack may be initiated remotely. The successful exploitation needs a simple authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 4.4.13 or 5.1.5 eliminates this vulnerability.

Productinfoedit

Name

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 5.9

VulDB Base Score: 5.5
VulDB Temp Score: 4.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.0
NVD Vector: 🔒

CVSSv2infoedit

AVACAuCIA
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
🔍🔍🔍🔍🔍🔍
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

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

Exploitinginfoedit

Class: Unknown
CWE: CWE-212
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Symfony 4.4.13/5.1.5

Timelineinfoedit

06/25/2020 CVE assigned
09/02/2020 +69 days Advisory disclosed
09/03/2020 +1 days VulDB entry created
11/12/2020 +70 days VulDB last update

Sourcesinfoedit

Advisory: github.com
Status: Not defined
Confirmation: 🔒

CVE: CVE-2020-15094 (🔒)

Entryinfoedit

Created: 09/03/2020 07:41 AM
Updated: 11/12/2020 01:57 PM
Changes: (1) source_cve_cna
Complete: 🔍

Comments

No comments yet. Please log in to comment.

Are you interested in using VulDB?

Download the whitepaper to learn more about our service!