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Vulnerability DatabaseCVE-2023-1993

CVE-2023-1993: 
Wireshark vulnerability analysis and mitigation

Overview

The vulnerability identified as CVE-2023-1993 affects the LISP dissector in Wireshark versions 4.0.0 to 4.0.4 and 3.6.0 to 3.6.12. The vulnerability was discovered and disclosed on April 12, 2023, allowing denial of service via packet injection or crafted capture file (Wireshark Advisory, NVD).

Technical details

The vulnerability exists in the LISP (Locator/ID Separation Protocol) dissector component of Wireshark. When processing certain malformed packets, the dissector can enter a large processing loop, causing excessive CPU resource consumption (Wireshark Advisory).

Impact

The primary impact of this vulnerability is the potential for denial of service attacks. An attacker can trigger excessive CPU resource consumption in Wireshark either by injecting malformed packets into a network or by convincing a user to open a specially crafted packet trace file (Wireshark Advisory).

Mitigation and workarounds

The vulnerability has been fixed in Wireshark versions 4.0.5 and 3.6.13. Users are advised to upgrade to these or later versions to mitigate the vulnerability. Various Linux distributions have also released security updates including Debian, Fedora, and Gentoo (Debian Advisory, Fedora Update, Gentoo Advisory).

Additional resources

Source: This report was generated using AI

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