A vulnerability classified as critical has been found in libsvg2 up to 2012-10-19. Affected is the function svgStringToLength of the file svg_types.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. CVE summarizes:

An issue was discovered in libsvg2 through 2012-10-19. A stack-based buffer overflow in svgStringToLength in svg_types.c allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact because sscanf is misused.

The bug was discovered 09/12/2018. The weakness was presented 09/22/2018 (Website). The advisory is available at github.com. This vulnerability is traded as CVE-2018-17333 since 09/22/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 10 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.

See 124397 and 124399 for similar entries.

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• libsvg2

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• 2012-10-19

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CPE 2.2info

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