Foo Labs Xpdf 4.01 TextOutputDev.c TextPage::findGaps PDF File memory corruption

Summaryinfo

A vulnerability was found in Foo Labs Xpdf 4.01. It has been classified as critical. This issue affects the function TextPage::findGaps of the file TextOutputDev.c. Performing a manipulation as part of PDF File results in memory corruption. This vulnerability is identified as CVE-2019-9877. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Foo Labs Xpdf 4.01 (Document Reader Software). It has been classified as critical. This affects the function TextPage::findGaps of the file TextOutputDev.c. The manipulation as part of a PDF File 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:

There is an invalid memory access vulnerability in the function TextPage::findGaps() located at TextOutputDev.c in Xpdf 4.01, which can (for example) be triggered by sending a crafted pdf file to the pdftops binary. It allows an attacker to cause Denial of Service (Segmentation fault) or possibly have unspecified other impact.

The bug was discovered 03/13/2019. The weakness was released 03/21/2019. This vulnerability is uniquely identified as CVE-2019-9877 since 03/19/2019. 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 8 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.

Entry connected to this vulnerability is available at VDB-132082. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Document Reader Software

Vendor

• Foo Labs

Name

• Xpdf

Version

• 4.01

License

• open-source

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion