Foo Labs Xpdf 4.00 JPXStream.cc JPXStream::close memory corruption

Summaryinfo

A vulnerability categorized as critical has been discovered in Foo Labs Xpdf 4.00. Affected by this issue is the function JPXStream::close of the file JPXStream.cc. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2018-8107. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Foo Labs Xpdf 4.00 (Document Reader Software). Affected by this issue is the function JPXStream::close of the file JPXStream.cc. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The JPXStream::close function in JPXStream.cc in xpdf 4.00 allows attackers to launch denial of service (heap-based buffer over-read and application crash) via a specific pdf file, as demonstrated by pdftohtml.

The bug was discovered 02/22/2018. The weakness was published 03/14/2018 (Website). The advisory is shared for download at forum.xpdfreader.com. This vulnerability is handled as CVE-2018-8107 since 03/13/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 232048 (Linux Distros Unpatched Vulnerability : CVE-2018-8107), which helps to determine the existence of the flaw in a target environment.

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 vulnerability database at Tenable (232048). Similar entries are available at VDB-114493, VDB-114494, VDB-114495 and VDB-114496. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• Foo Labs

Name

• Xpdf

Version

• 4.00

License

• open-source

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

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Once again VulDB remains the best source for vulnerability data.

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