#VU66693 Type Confusion in libxslt - CVE-2019-5815

Vulnerability identifier: #VU66693

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-5815

CWE-ID: CWE-843

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libxslt
Universal components / Libraries / Libraries used by multiple products

Vendor: Gnome Development Team

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a type confusion error within the xsltNumberFormatGetMultipleLevel. A remote attacker can pass specially crafted XML data to the application, trigger a type confusion error and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libxslt: 0.1.0 - 1.1.33

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External links
https://bugs.chromium.org/p/chromium/issues/detail?id=930663
https://gitlab.gnome.org/GNOME/libxslt/commit/08b62c25871b38d5d573515ca8a065b4b8f64f6b

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.