Summaryinfo

A vulnerability has been found in sysstat 12.1.1 and classified as critical. Affected by this issue is the function remap_struct of the file sa_common.c. Performing a manipulation results in out-of-bounds. This vulnerability is known as CVE-2018-19517. Attacking locally is a requirement. No exploit is available. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Detailsinfo

A vulnerability was found in sysstat 12.1.1. It has been classified as critical. This affects the function remap_struct of the file sa_common.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in sysstat 12.1.1. The remap_struct function in sa_common.c has an out-of-bounds read during a memset call, as demonstrated by sadf.

The bug was discovered 11/22/2018. The weakness was published 11/24/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-19517 since 11/24/2018. 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 2 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 172262 (OpenSUSE Security Update for sysstat (openSUSE-SU-2019:1176-1)).

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 SecurityFocus (BID 106010†). Similar entry is available at VDB-127057. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• sysstat

Version

• 12.1.1

Website

• Product: https://github.com/sysstat/sysstat/

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