Phpicalendar up to 2.24 improper authentication

Summaryinfo

A vulnerability marked as problematic has been reported in Phpicalendar up to 2.24. This vulnerability affects unknown code. Performing a manipulation results in improper authentication. This vulnerability is identified as CVE-2008-5967. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in Phpicalendar up to 2.24 (Calendar Software). This affects an unknown code. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

admin/index.php in PHP iCalendar 2.3.4, 2.24, and earlier does not require administrative authentication for an addupdate action, which allows remote attackers to upload a calendar (aka .ics) file with arbitrary content to the calendars/ directory outside the web root.

The weakness was released 01/26/2009 (Website). It is possible to read the advisory at milw0rm.com. This vulnerability is uniquely identified as CVE-2008-5967 since 01/26/2009. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by EgiX and been published even before and not after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 127 days. During that time the estimated underground price was around $0-$5k.

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 X-Force (48323), Exploit-DB (6519) and Secunia (SA31944†). Entries connected to this vulnerability are available at VDB-46072 and VDB-45766. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Calendar Software

Name

• Phpicalendar

Version

• 0.7
• 0.8
• 0.9
• 0.9.5
• 1.0
• 1.1
• 2.0.1
• 2.0c
• 2.1
• 2.2
• 2.3.4
• 2.21
• 2.22
• 2.23
• 2.24

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Entryinfo

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

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