GNU PSPP 1.2.0 pspp-dump-sav.c read_bytes_internal memory corruption

Summaryinfo

A vulnerability classified as critical has been found in GNU PSPP 1.2.0. Affected is the function read_bytes_internal of the file utilities/pspp-dump-sav.c. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2018-20230. The attack requires a local approach. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in GNU PSPP 1.2.0. This affects the function read_bytes_internal of the file utilities/pspp-dump-sav.c. 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 was discovered in PSPP 1.2.0. There is a heap-based buffer overflow at the function read_bytes_internal in utilities/pspp-dump-sav.c, which allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact.

The bug was discovered 12/18/2018. The weakness was disclosed 12/19/2018 (Website). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2018-20230 since 12/19/2018. 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 of the vulnerability are known, but there is no available exploit.

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 172098 (OpenSUSE Security Update for pspp, spread-sheet-widget (openSUSE-SU-2019:0198-1)).

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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Productinfo

Vendor

• GNU

Name

• PSPP

Version

• 1.2.0

License

• open-source

Website

• Vendor: https://www.gnu.org/

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