A vulnerability, which was classified as critical, was found in pdfalto up to 0.2. This affects the function TextPage::dump of the file XmlAltoOutputDev.cc. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue has been found in pdfalto through 0.2. It is a heap-based buffer overflow in the function TextPage::dump in XmlAltoOutputDev.cc.

The bug was discovered 09/22/2018. The weakness was released 09/23/2018 (Website). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2018-17338 since 09/22/2018. 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 are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 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.

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• pdfalto

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• 0.1
• 0.2

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