Grandstream UCM Series IP PBX prior 1.0.20.52 HTTP Interface parameter delimiter

Summaryinfo

A vulnerability identified as very critical has been detected in Grandstream UCM Series IP PBX. This vulnerability affects unknown code of the component HTTP Interface. The manipulation leads to parameter delimiter. This vulnerability is uniquely identified as CVE-2024-0840. The attack is possible to be carried out remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Grandstream UCM Series IP PBX. This issue affects some unknown functionality of the component HTTP Interface. The manipulation with an unknown input leads to a parameter delimiter vulnerability. Using CWE to declare the problem leads to CWE-141. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as parameter or argument delimiters when they are sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Grandstream UCM Series IP PBX before firmware version 1.0.20.52 is affected by a parameter injection vulnerability in the HTTP interface. A remote and authenticated attacker can execute arbitrary code by sending a crafted HTTP request. Authentication may be possible using a default user and password. Affected models are the UCM6202, UCM6204, UCM6208, and UCM6510.

The weakness was disclosed by Jacob Baines. The advisory is shared at vulncheck.com. The identification of this vulnerability is CVE-2024-0840 since 01/23/2024. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/29/2024).

Upgrading to version 1.0.20.52 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Communications System

Vendor

• Grandstream

Name

• UCM Series IP PBX

License

• commercial

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion