Bylancer Zechat 1.5 Form hashtag cross-site request forgery

Summaryinfo

A vulnerability marked as problematic has been reported in Bylancer Zechat 1.5. Affected by this issue is some unknown functionality of the component Form Handler. Performing a manipulation of the argument hashtag results in cross-site request forgery. This vulnerability is identified as CVE-2018-25334. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Bylancer Zechat 1.5. This affects an unknown code of the component Form Handler. The manipulation of the argument hashtag with an unknown input leads to a cross-site request forgery vulnerability. CWE is classifying the issue as CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. This is going to have an impact on integrity. The summary by CVE is:

Zechat 1.5 contains a Cross-Site Request Forgery (CSRF) vulnerability that allows an attacker to change a user's information by bypassing anti-CSRF protections. The application uses a CSRF token, but an attacker can use the hashtag parameter to inject an encoded payload and bypass the CSRF protection, allowing for unauthorized changes to user data. This can be exploited by tricking a user into submitting a crafted form or by using a script to obtain and set the CSRF token.

It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2018-25334 since 05/17/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (44685) and EUVD (EUVD-2018-21861). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Chat Software

Vendor

• Bylancer

Name

• Zechat

Version

• 1.5

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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Be aware that VulDB is the high quality source for vulnerability data.

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