A vulnerability, which was classified as problematic, has been found in GNOME Web up to 3.28.2.1. Affected by this issue is an unknown function of the file ephy-session.c. The manipulation with an unknown input leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is availability. CVE summarizes:

ephy-session.c in libephymain.so in GNOME Web (aka Epiphany) through 3.28.2.1 allows remote attackers to cause a denial of service (application crash) via JavaScript code that triggers access to a NULL URL, as demonstrated by a crafted window.open call.

The bug was discovered 05/24/2018. The weakness was presented 05/23/2018 as Bug 795740 as not defined bug report (Bugzilla). The advisory is available at bugzilla.gnome.org. This vulnerability is handled as CVE-2018-11396 since 05/23/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known. This vulnerability is assigned to T1055 by the MITRE ATT&CK project.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 110673 (Fedora 27 : 1:epiphany (2018-de5457b0a2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277360 (Fedora Security Update for epiphany (FEDORA-2018-de5457b0a2)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (110673) and Exploit-DB (44821). See 119253 for similar entry.

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Vendor

• GNOME

Name

• Web

Version

• 3.28.2.0
• 3.28.2.1

License

• open-source

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